UK Referencing Styles Guide with Examples 2026-2027 — Harvard, APA, Vancouver, OSCOLA, MHRA, Oxford, IEEE & Chicago

Referencing trips up more capable UK students than almost anything else — not because the ideas are hard, but because every department seems to want a different style, each with its own punctuation, its own logic and its own unforgiving conventions, and getting it wrong costs marks and, at worst, triggers a plagiarism inquiry.

This UK referencing styles guide explains the major systems used across British universities — Harvard, APA 7th, Vancouver, OSCOLA, MHRA, Oxford, IEEE and Chicago — what each one is, who uses it, how its in-text mechanism works, and what a correct reference actually looks like. Trusted since 2001 with 115,000+ UK orders at 4.9/5, Projectsdeal builds fully referenced model answers in any of these styles, written by subject specialists under our Zero AI Policy and supplied with free Turnitin reports, as reference and study material under our academic integrity policy.

Why your department, not you, decides the referencing style

The single most important thing to understand about referencing is that you do not get to choose the style — your department, and often your individual module, decides it for you, and that instruction overrides every general rule of thumb you will read anywhere, including this page. A business school will set Harvard; a law school will require OSCOLA; a psychology department will expect APA 7th; a school of nursing may specify Vancouver on one module and Harvard on another. The first job of any assignment is therefore to open the module handbook or assessment brief and find out which style is required, because a beautifully argued essay referenced in the wrong system still loses marks for the most avoidable of reasons.

Styles are set at department level so that every submission on a module is consistent and can be marked fairly against the same conventions, and so that students are trained in the referencing culture of their discipline. Those cultures are not arbitrary. Scientific and technical fields adopted compact numbered systems because a page of research reads more cleanly when citations are small markers rather than names and dates breaking up the prose. The social sciences adopted author-date because the year a source was published is meaningful evidence — it tells the reader instantly how current the argument is. Law and the humanities adopted footnotes because they cite cases, statutes, manuscripts and primary texts that often need a fuller, discursive note than a bracket can hold. Understanding why your discipline references the way it does makes the rules far easier to remember. This guide walks through each major UK style in turn, so you can find your own and see how it differs from the others.

The three referencing mechanisms: author-date, numbered and footnote

Although UK universities use eight or more named styles, almost all of them work in one of three ways, and once you understand the three mechanisms the individual styles stop feeling like a memory test. The first is the author-date (parenthetical) system, used by Harvard and APA. Here you insert the author’s surname and the year of publication in brackets at the point you use a source — for example (Smith, 2020, p. 15) — and the full details go in an alphabetical reference list at the end. The reader sees who and when immediately, without looking away from the sentence.

The second is the numbered (numeric) system, used by Vancouver and IEEE. Each source is given a number the first time it is cited, that number is placed in the text — as a bracketed figure like [1] or a superscript — and the reference list is ordered by number rather than alphabetically. Re-citing a source reuses its original number. This keeps the running text uncluttered, which is why the sciences and engineering prefer it. The third is the footnote (documentary-note) system, used by OSCOLA, MHRA, Oxford and Chicago’s notes variant. A small superscript number in the text points to a note at the foot of the page (or the end of the document) that carries the full citation, and a bibliography usually appears as well. Footnotes suit law and the humanities because they let the writer add comment, cross-reference and nuance alongside the source. The comparison table further down maps every style to its mechanism at a glance.

Harvard referencing: the UK default (author-date)

Harvard is the most widely used referencing style in UK higher education and the one most students meet first. It is an author-date system, dominant in business, management, economics and the social sciences, though it appears across many disciplines. In the text you cite the author’s surname and the year, adding a page number for a direct quotation: research on motivation has developed rapidly (Smith, 2020, p. 15), or, naming the author in your own sentence, Smith (2020) argues that…. At the end, an alphabetical reference list gives the full detail. A book reference reads: Smith, J. (2020) The Psychology of Learning. 2nd edn. London: Routledge. A journal article adds the article title, journal, volume, issue and page range.

The one complication with Harvard is that it is not a single, centrally owned standard but a family of closely related variants, so Cite Them Right Harvard, a university’s in-house Harvard, and another institution’s version differ in small details of punctuation and italicisation. That is exactly why your own department’s Harvard guide is the authority, and why consistency within one piece matters more than matching any external example. The next style, APA 7th, is Harvard’s closest relative and the two are worth comparing side by side.

APA 7th edition: psychology, education and the sciences (author-date)

APA, now in its 7th edition, is the author-date style of the American Psychological Association and the standard across psychology, education, and much of the health and social sciences in the UK. In text it looks much like Harvard — (Smith, 2020, p. 15) — but the crucial difference is that APA is a single, tightly specified standard rather than a family of variants, so its rules for punctuation, capitalisation and layout are fixed and identical everywhere. That precision is part of why science-facing departments like it. A book reference reads: Smith, J. (2020). The psychology of learning (2nd ed.). Routledge. Note the distinctive APA features: sentence-case titles (only the first word and proper nouns capitalised), the edition in brackets, and the publisher named without a place of publication, which 7th edition dropped.

APA also has detailed conventions for multiple authors, for citing sources with no date, and for the growing range of online and aud-visual material students now use, and it pairs the reference list with clear rules for tables, figures and the running head in formal reports. Because it is so standardised, a reference generator can get you close, but you should still verify each entry against the current 7th-edition rules and your department’s brief.

Vancouver referencing: medicine, health and the sciences (numbered)

Vancouver is the numbered style of medicine, nursing, health sciences and much biomedical research, named after the city where its founding editors first met. Instead of author and date, you place a number at each point of citation — commonly a bracketed number such as (1), sometimes a superscript — assigned in the order sources first appear in your text. The reference list is then ordered numerically, not alphabetically, and if you cite source (1) again later you reuse the number 1. A reference reads: 1. Smith J. The physiology of pain. 2nd ed. London: Elsevier; 2020. Note the minimal punctuation, the abbreviated author initials without full stops, and the year at the end.

The appeal of Vancouver in clinical and scientific writing is compactness: a sentence can cite three studies as (1–3) without interrupting the reader, which matters when a literature review leans on dozens of sources. Be aware, though, that health faculties are not uniform — some nursing and health modules require Harvard or APA rather than Vancouver — so the numbered style is common in the field but never assume it; the brief decides.

OSCOLA: the law student’s footnote system

OSCOLA — the Oxford Standard for the Citation of Legal Authorities — is the footnote style used by virtually every law school in the UK, and law is the discipline where getting the style exactly right matters most, because legal citation is a professional skill in its own right. Rather than brackets, OSCOLA uses superscript numbers pointing to footnotes, and it has precise formats for the sources law uniquely relies on. A case is cited as Donoghue v Stevenson [1932] AC 562 (HL); a statute as Human Rights Act 1998; and a secondary source in a footnote as Timothy Endicott, Administrative Law (4th edn, OUP 2018) 25. OSCOLA deliberately keeps full stops to a minimum — no full points after initials or abbreviations — which is one of its most distinctive quirks.

A law submission using OSCOLA typically carries footnotes throughout and a bibliography at the end, often divided into tables of cases and legislation followed by secondary sources. Because the rules are exacting and heavily tested, law students are expected to master OSCOLA early, working carefully through cases, statutes, journals and secondary sources until the format becomes second nature.

MHRA referencing: the humanities footnote style

MHRA, from the Modern Humanities Research Association, is a footnote style used widely across the humanities — English literature, modern languages, history, film and cultural studies. Like other note systems it places a superscript number in the text and the citation at the foot of the page, and it distinguishes carefully between the first, full footnote and later shortened references to the same work. A first footnote for a book reads: Jane Smith, The Art of the Sonnet, 2nd edn (London: Faber, 2020), p. 15. The bibliography entry inverts the author’s name and drops the page number: Smith, Jane, The Art of the Sonnet, 2nd edn (London: Faber, 2020).

MHRA suits the humanities because literary and historical writing often wants to quote at length, gloss a translation or point the reader to an edition, and a footnote gives room to do so without breaking the argument. The distinction between the footnote form (author’s name in natural order) and the bibliography form (surname first) is a common source of lost marks, so it repays care. Our full MHRA referencing guide covers first and subsequent notes, edited collections and online sources in detail.

Oxford referencing: documentary-note for history and the humanities

Oxford referencing is a documentary-note (footnote) system closely related to MHRA and used chiefly in history, classics, philosophy, theology and related humanities. It works on the same principle — a superscript number in the text, a full citation in a footnote, and a bibliography at the end — but its precise conventions for punctuation, abbreviation and the handling of primary sources differ, and, like Harvard, Oxford is really a family of institution-specific variants rather than one fixed rulebook. A footnote reads: John Smith, A History of Oxford (Oxford: Oxford University Press, 2020), p. 42.

Because history and theology draw heavily on primary and archival material, the documentary-note approach lets writers cite a manuscript, an ancient text or an edition precisely and add scholarly comment in the same note. The key practical point is to follow the specific Oxford guide your department publishes, since versions vary more than students expect. Our Oxford referencing guide explains the footnote and bibliography formats and how they differ from MHRA.

IEEE referencing: engineering and computing (numbered)

IEEE, from the Institute of Electrical and Electronics Engineers, is the numbered style standard in electrical and electronic engineering, computer science and computing. Citations appear as bracketed numbers in the order they are first used — the algorithm in [1] improves on the approach of [2] — and the reference list is numbered to match. A reference reads: [1] J. Smith, Digital Systems Design, 2nd ed. London, U.K.: Pearson, 2020. IEEE has particularly detailed formats for the sources engineering relies on: conference papers, technical standards, datasheets and, increasingly, online repositories.

The numbered approach keeps highly technical writing readable, since a paragraph can reference several standards or prior papers without the prose filling with names and dates. As with Vancouver, re-citing a source reuses its number, and the number, not the author, is what the reader follows to the reference list. Engineering and computing students should treat IEEE as the default unless their module states otherwise.

Chicago referencing: two systems in one style

Chicago is unusual in offering two distinct systems under one name, and part of using it correctly is knowing which one your course wants. The notes-bibliography system uses footnotes or endnotes plus a bibliography and is favoured in history and the arts. A first note reads: 1. Jane Smith, The Gilded Age (Chicago: University of Chicago Press, 2020), 15. The author-date system, by contrast, uses in-text brackets like (Smith 2020, 15) with a reference list, and is favoured in the sciences and social sciences — effectively Chicago’s answer to Harvard and APA.

Chicago appears in some UK history and interdisciplinary programmes, often alongside or as an alternative to Oxford and MHRA. If your department specifies Chicago, check which of the two variants applies before you start, because the in-text mechanism is completely different between them even though the reference details are similar. A style with two mechanisms is a useful reminder that the name of a style is not enough on its own — the mechanism and the edition matter too.

All the UK referencing styles compared

The table below brings the major styles together so you can see, in one view, which mechanism each uses, who typically uses it, and how a citation appears. Use it to sanity-check what your handbook has set you, then follow your department’s own guide for the fine detail.

The reference list and the bibliography: what the end of your work is for

Every referencing style pairs its in-text citations with a full list at the end, but there is a distinction students routinely blur. A reference list contains only the sources you actually cited in the text, and it is the norm in author-date and numbered styles — Harvard, APA, Vancouver and IEEE. A bibliography can go further, including background reading you consulted to inform your thinking even if you did not cite it directly, and it is common in the footnote-based humanities and law styles such as MHRA, Oxford, Chicago and OSCOLA, which typically carry both footnotes at the point of use and a bibliography at the end. The two words are not interchangeable, and a brief that asks for one will not accept the other.

Whichever you produce, its purpose is the same: to let any reader locate and verify every source, and to give proper credit to the authors whose work you have drawn on. That is why accuracy and completeness matter as much as format — a reference missing its year, its edition or its page range fails its basic job even if the punctuation is perfect. It is also why the in-text citations and the end list must agree exactly: every in-text citation needs a matching entry in the list, and every entry in the list should correspond to a citation in the text. Markers check this correspondence, and mismatches are among the most common ways students lose easy marks.

How accurate referencing protects you from plagiarism

Referencing is not merely a formatting chore; it is the mechanism by which academic writing stays honest. Plagiarism — presenting someone else’s words, ideas or data as your own, whether deliberately or by accident — is one of the most serious academic offences, and accurate citation is your primary defence against it. When you attribute every quotation, every paraphrase and every borrowed idea to its source, both in the text and in the reference list, you draw a clear line between your own thinking and other people’s, and a reader can see exactly where that line falls. Referencing, done properly, is what allows you to build on the scholarship of others without taking credit for it.

A few habits make accurate referencing far easier. Cite as you write, not at the end, so nothing is lost or misremembered. Put exact borrowed wording inside quotation marks and give a page number. Remember that paraphrasing still needs a citation — changing the words does not make an idea yours. Keep full details of every source as you gather it, and use one style consistently throughout. Above all, every reference must be real and verifiable: fabricated or hallucinated references, which AI writing tools are notorious for producing, are themselves an academic-integrity breach and are quickly caught. For a fuller treatment, see our guide on how to avoid plagiarism, and if a module uses an author-date or humanities style you have not met before, our MLA referencing guide covers another system some UK courses adopt.

How a fully referenced model answer helps you learn the style

Reading the rules of a referencing style is one thing; seeing them applied consistently across a whole assignment is what makes them stick. That is where a model answer earns its keep. When you can look at a complete piece — every in-text citation placed correctly, every source formatted the same way, the reference list matching the text entry for entry — the abstract rules become a concrete pattern you can reproduce. You see how a quotation is introduced and cited, how a paraphrase is attributed, how an edited collection or a website is handled, and how the end list is ordered and punctuated for your particular style.

Every model answer Projectsdeal builds is fully referenced in the exact style your department requires, using real, current sources with in-text citations that match the reference list, so it works as a worked exemplar of the style as well as the subject. Supplied as reference and study material under our academic-integrity policy, it lets you study correct referencing on your own topic rather than a generic textbook example. If you are overwhelmed and thinking “can someone do my assignment so I can see how it should be referenced,” a model built to your brief is the honest way to learn the convention and apply it yourself next time.

Bringing it together

UK referencing looks daunting only until you see the pattern beneath it. There are many named styles, but they run on just three mechanisms — author-date brackets, numbered citations and footnotes — and each discipline chose the one that fits how it argues. Harvard and APA carry the author and year in brackets for the social sciences; Vancouver and IEEE use compact numbers for medicine, the sciences and engineering; OSCOLA, MHRA, Oxford and Chicago place full citations in footnotes for law and the humanities. Learn which mechanism your style uses, apply it consistently, keep every source real and verifiable, and make your in-text citations and reference list agree, and referencing stops costing you marks and starts protecting your work.

Whatever style your module sets, our specialists build human-written, fully referenced model answers to study and learn from. Trusted since 2001, with 115,000+ UK orders and a 4.9/5 rating, our service exists to make the mechanics of good academic work — referencing very much included — feel manageable, and to leave you more confident than you were before.

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Frequently Asked Questions

1. What is a UK referencing styles guide and why does it matter?
A UK referencing styles guide is an overview of the citation systems British universities use — Harvard, APA 7th, Vancouver, OSCOLA, MHRA, Oxford, IEEE and Chicago — and of when each one applies. It matters because referencing is not optional presentation: it is how you show whose ideas you have used, let a reader trace every source, and prove your work is your own. Using the correct style, consistently and accurately, is directly assessed and is your main defence against an accusation of plagiarism.

2. Which referencing style should I use for my assignment?
Use whichever style your department or module handbook specifies — that instruction always overrides any general rule. As a broad guide, Harvard suits business and the social sciences, APA 7th suits psychology and education, Vancouver suits medicine and health, OSCOLA is required for law, MHRA and Oxford serve the humanities, IEEE is used in engineering and computing, and Chicago appears in history and some social sciences. If your handbook is silent, ask your tutor rather than guessing.

3. Why do different departments set different referencing styles?
Each discipline developed conventions that fit how it argues. Sciences favour numbered systems (Vancouver, IEEE) so the text stays uncluttered and the emphasis falls on findings. Social sciences favour author-date (Harvard, APA) because the year of publication signals how current the evidence is. Law and the humanities favour footnotes (OSCOLA, MHRA, Oxford, Chicago) because they cite cases, statutes and primary texts that need fuller, discursive notes. The department sets the style so every submission is consistent and fairly comparable.

4. What is the difference between author-date, numbered and footnote systems?
They differ in how the in-text citation points to the full reference. Author-date (Harvard, APA) inserts the author surname and year in brackets — (Smith, 2020) — and lists sources alphabetically. Numbered systems (Vancouver, IEEE) place a number in the text — [1] or superscript — and list sources in citation order. Footnote systems (OSCOLA, MHRA, Oxford, Chicago notes) put a superscript marker in the text and the full citation at the foot of the page. The scholarship each cites is the same; only the signposting changes.

5. What is Harvard referencing and who uses it?
Harvard is an author-date system and the most widely used style at UK universities, especially in business, management and the social sciences. In text you cite the author and year, for example (Smith, 2020, p. 15); the reference list is alphabetical by surname. A book entry reads: Smith, J. (2020) The Psychology of Learning. 2nd edn. London: Routledge. Harvard has many local variants, so always follow your own institution’s version.

6. How is APA 7th different from Harvard?
APA 7th is also author-date and looks similar in text — (Smith, 2020, p. 15) — but it is a single, tightly standardised style owned by the American Psychological Association, so its punctuation, capitalisation and reference layout are fixed rather than institution-specific. It dominates psychology, education and the health and social sciences. A book reference reads: Smith, J. (2020). The psychology of learning (2nd ed.). Routledge. Note the sentence-case title and the publisher without a place of publication.

7. When is Vancouver referencing used?
Vancouver is a numbered style standard in medicine, nursing, health sciences and much of the biomedical field. Sources are numbered in the order they first appear, cited in text as (1) or a superscript, and listed numerically at the end. A reference reads: 1. Smith J. The physiology of pain. 2nd ed. London: Elsevier; 2020. It keeps clinical writing compact and is favoured by biomedical journals, though some health modules use Harvard or APA instead — check your brief.

8. What is OSCOLA and why do law students have to use it?
OSCOLA (the Oxford Standard for the Citation of Legal Authorities) is the footnote style used by almost every UK law school. Law is unusual in citing cases, statutes and secondary sources that need precise, standardised formatting, and OSCOLA provides it. A case is cited as: Donoghue v Stevenson [1932] AC 562 (HL). A book footnote reads: Timothy Endicott, Administrative Law (4th edn, OUP 2018) 25. Full stops are kept to a minimum and the citation lives in a footnote, not in brackets.

9. What is MHRA referencing used for?
MHRA (Modern Humanities Research Association) is a footnote style used across the humanities — English, modern languages, history and cultural studies. A first footnote gives the full citation: Jane Smith, The Art of the Sonnet, 2nd edn (London: Faber, 2020), p. 15. The bibliography inverts the author name: Smith, Jane, The Art of the Sonnet, 2nd edn (London: Faber, 2020). We explain the mechanics fully in our dedicated MHRA referencing guide.

10. How does Oxford referencing differ from MHRA?
Oxford referencing is a documentary-note (footnote) system close in spirit to MHRA and used mainly in history, classics, philosophy and theology. Like MHRA it places a full citation in a footnote and lists sources in a bibliography, but the precise punctuation and abbreviation conventions differ, and many universities publish their own Oxford variant. A footnote reads: John Smith, A History of Oxford (Oxford: Oxford University Press, 2020), p. 42. Follow your department’s Oxford referencing guide, as versions vary.

11. Where is IEEE referencing used?
IEEE is a numbered style standard in electrical engineering, electronics, computer science and computing. Citations appear in square brackets in the order they are used — as in [1] — and the numbered reference list matches. A reference reads: [1] J. Smith, Digital Systems Design, 2nd ed. London, U.K.: Pearson, 2020. It is efficient for technical writing that cites many standards, conference papers and datasheets, keeping the running text clean.

12. What are the two forms of Chicago referencing?
Chicago offers two systems. Notes-bibliography uses footnotes or endnotes plus a bibliography and suits history and the arts: a first note reads 1. Jane Smith, The Gilded Age (Chicago: University of Chicago Press, 2020), 15. Author-date uses in-text brackets — (Smith 2020, 15) — and a reference list, and suits the sciences and social sciences. UK courses that adopt Chicago will tell you which of the two variants to use.

13. What is the difference between a reference list and a bibliography?
A reference list contains only the sources you actually cited in the text, and it is standard in author-date and numbered styles such as Harvard, APA, Vancouver and IEEE. A bibliography can additionally include background reading you consulted but did not cite, and it is common in footnote-based humanities and law styles such as MHRA, Oxford, Chicago and OSCOLA. Some styles use both a footnote at point of use and a full bibliography at the end. Your handbook specifies which you must provide.

14. How does accurate referencing help me avoid plagiarism?
Plagiarism is presenting someone else’s words or ideas as your own. Accurate referencing prevents it by attributing every quotation, paraphrase and borrowed idea to its source, in text and in the reference list, so the reader can see exactly where your thinking ends and another author’s begins. Cite as you write rather than afterwards, quote exact wording in quotation marks, reference paraphrased ideas too, and keep every source real and verifiable — invented references, a hallmark of AI tools, are themselves an academic-integrity breach.

15. Do I have to be perfectly consistent within one style?
Yes — consistency is half of what referencing marks reward. Within a single piece you must use one style throughout and apply its rules uniformly: the same punctuation, the same order of elements, the same treatment of edition, place and date every time. Markers notice mixed styles, stray full stops and reference lists that do not match the in-text citations. A reference-management tool helps, but you should still check every entry by hand against your department’s guide.

16. Can Projectsdeal produce a model answer referenced in my required style?
Yes. Every model answer we build is fully referenced in whatever style your department requires — Harvard, APA 7th, Vancouver, OSCOLA, MHRA, Oxford, IEEE or Chicago — with real, current, correctly formatted sources and matching in-text citations. It is supplied as reference and study material under our academic-integrity policy, written by a UK subject specialist under our Zero AI Policy, with free Turnitin AI and similarity reports, available 24x7 since 2001.