Oxford referencing: footnotes, ibid and the bibliography
Oxford referencing is a note system: a superscript number in your sentence points to a footnote at the foot of the page that holds the full source, and the same sources are listed again alphabetically in a bibliography at the end. The first note for a source is full; every later note for the same source is shortened to author, short title and page. The single rule that catches most students out is that a footnote number goes after the punctuation, and that ibid. only works when the note directly above it refers to the same source.
Key points
- The footnote number goes after the full stop, not before it.
- The first note is full; later notes use author, short title, page.
- Footnotes use commas and first-name-first order; the bibliography inverts the name and uses full stops.
- ibid. refers only to the note immediately above, never two notes up.
- A bibliography is still required even when every source already has a note.
What is Oxford referencing?
Oxford referencing is a documentary-note system in which the source is given in a footnote rather than in the body of the sentence. It is the standard in history, law, theology, classics and parts of philosophy, and it exists because those subjects cite archival material, statutes and manuscripts that simply will not fit inside a bracket. The definitive description is New Hart's Rules (Oxford University Press, 2014), and most universities publish a local variant of it.
The practical difference from Harvard and APA is where the reader's eye goes. In a bracket system the reader sees an author and a year mid-sentence; in Oxford the reader sees a small number and can ignore it entirely, which is why Oxford tolerates long, commented citations that would wreck a Harvard sentence.
How do you write an Oxford footnote?
A first footnote gives the author in normal order, the title in italics, the publication details in brackets and the page number last. For a book: Peter Englund, The Beauty and the Sorrow (London: Profile Books, 2011), 134. No "p." is needed before the page number in the Oxford style used by most UK departments.
A chapter in an edited collection names both the chapter and the book: Lisa Ford, 'Settler Sovereignty', in The Oxford Handbook of Legal History, ed. Markus Dubber and Christopher Tomlins (Oxford: Oxford University Press, 2018), 209. The chapter title is in single quotation marks and the book title in italics — the two never swap.
What is the difference between the footnote and the bibliography entry?
The footnote is punctuated as a sentence and the bibliography entry is punctuated as a list item, and the author's name is inverted in only one of them. This is the difference that costs marks most often, because the two look almost identical at a glance.
| Element | Footnote | Bibliography |
|---|---|---|
| Author | Peter Englund | Englund, Peter. |
| Separators | Commas | Full stops |
| Publication details | In brackets | Not bracketed |
| Page | The exact page cited | Page range, or none for a whole book |
| Order | Order of first appearance | Alphabetical by surname |
When can you use ibid. and short form?
ibid. means "in the same place" and may only be used when the note immediately above cites the same source. If note 12 cites Englund and note 13 cites Ford, then note 14 cannot say ibid. to mean Englund — it must give the short form. Where the page differs, write ibid., 87.
The short form is the safer default and several departments have dropped ibid. entirely because it breaks the moment a note is inserted during editing. A short form survives editing: Englund, Beauty and the Sorrow, 87. If you are working to a deadline and moving paragraphs around, use short form everywhere and you will never have to re-audit the note sequence.
How do you cite a journal article, a website and a source you did not read yourself?
A journal article puts the article title in quotation marks and the journal title in italics, with volume, issue, year and page: Mary Beard, 'Writing Roman History', Journal of Roman Studies 108 (2018): 1–14, at 7. The "at 7" pinpoints the page you used within the article's range.
A web source needs the date you accessed it, because a page can change after you cite it: The National Archives, 'Domesday Book', accessed 14 September 2026, https://www.nationalarchives.gov.uk/domesday/. A source you found quoted in another book is cited as both: Smith, Letters, 44, quoted in Ford, Settler Sovereignty, 209. Citing the original alone when you never opened it is a misrepresentation, not a shortcut.
Do you still need a bibliography?
Yes — nearly every Oxford-using department requires one even though all sources already appear in notes. The notes tell the reader where one claim came from; the bibliography tells the reader what body of material the work rests on, and it is the only place where the marker can see your reading at a glance.
Group it only if your department asks for it. Law dissertations commonly separate cases, legislation and secondary sources; a history essay is usually one alphabetical list. Anything you read but did not cite normally does not belong there unless the brief asks for a "works consulted" list.
Oxford or Harvard — which should you use?
Use whichever your department specifies, because this is not a matter of preference and the style is usually in the marking criteria. If you genuinely have a free choice, the deciding question is whether your sources need commentary: Oxford lets you add a line of explanation to a citation, Harvard does not.
A second practical factor is word count. Footnotes are often excluded from the limit while in-text brackets are not, which matters in a 10,000-word dissertation with 200 citations. Check the rule before you decide — assuming footnotes are free has produced some very awkward conversations. The mechanics of placement are the same in every system, and we cover them in the article on in-text citations.
Which Oxford mistakes cost the most marks?
The costliest mistakes are structural rather than typographic. Five recur in almost every first-year cohort:
- The note number placed before the full stop rather than after it.
- ibid. used across an intervening note, so it silently points at the wrong book.
- Footnote and bibliography formats mixed, with inverted names in the notes.
- Page numbers only on direct quotations, leaving paraphrases unverifiable.
- A source cited from a quotation in another work, presented as though read in the original.
None of these is a formatting quibble. Each one makes a claim harder or impossible to check, and a marker who cannot check your claim marks it as unsupported. That is the same logic behind plagiarism checks.
How do you check your footnotes before submission?
Read the notes on their own, as a list, with the body text hidden — that is the fastest way to catch a broken ibid. chain, because the error is invisible when you read the essay normally. Print the notes, or use your word processor's footnote pane, and check each one against the previous one.
If you are revising a long essay and need to recall what a particular source argued before you cite it again, ask the chat about the document you uploaded — it reads your own material, so the answer comes from the PDF in front of you rather than a summary of the book found somewhere online. For the substance of judging whether a source belongs in the essay at all, see our guide to evaluating sources.
Frequently asked questions
Does the footnote number go before or after the full stop?
After the full stop, and after a closing quotation mark. The only common exception is a dash, where the number goes before it. This is the opposite of the convention in some European note systems, which is why students who have referenced in another country often get it wrong.
Is Oxford referencing the same as Chicago?
They are close relatives but not identical. Chicago's notes-and-bibliography system uses the same logic, but differs on details such as the use of "p.", the treatment of access dates and the punctuation of publication details. Follow whichever your department names, and do not blend examples from both.
Can I use ibid. twice in a row?
Yes, as long as each ibid. refers to the note directly above it and that note is the same source. Three consecutive notes to the same book are correctly written as the full note, then ibid., then ibid. The rule breaks only when another source appears in between.
Do I need a footnote for every sentence?
You need one for every claim that comes from a source, which in practice means most sentences in a literature-heavy essay and few in an analytical passage that is your own reasoning. A paragraph with a single note at the end reads as though only the last sentence came from the source.
How do I cite a primary source such as a letter or a statute?
Give whatever identifies it uniquely in the archive: author, recipient, date, collection, archive and reference number for a letter; short title, year and section for a statute. Archival citation prioritises retrievability over a fixed template, which is precisely why note systems exist in these subjects.