Harvard referencing is an author-date citation system in which sources are cited in the text by the author’s surname and the year of publication, with full details listed alphabetically in a reference list. There is no single governing body for Harvard, so exact punctuation varies between universities; consistency within one document matters more than any universal rule.
This guide covers the in-text format, the reference-list format, the major institutional variants and worked examples you can adapt.
Why there is no single “Harvard” authority
Unlike APA, which is maintained by the American Psychological Association, Harvard is a family of author-date styles rather than a centrally published standard. Many institutions publish their own Harvard guide, and the British Standard BS ISO 690 informs several of them. The practical consequence: punctuation, italicisation and the use of “and” versus “&” differ between guides. Always follow the specific guide your department or journal mandates, and apply it uniformly.
For a wider comparison of conventions across the citation landscape, see our overview of citation styles compared.
In-text citations: (author, year)
Harvard in-text citations name the author and year in parentheses, adding a page number for direct quotations.
- Paraphrase: Research participation rose sharply over the decade (Smith, 2021).
- Direct quote: The findings were “unambiguous and replicable” (Smith, 2021, p. 14).
- Author named in sentence: Smith (2021) argued that the trend was structural.
- Two authors: (Smith and Jones, 2020) — some variants use an ampersand: (Smith & Jones, 2020).
- Three or more: (Smith et al., 2019).
Where an author has several works in the same year, distinguish them with letters: (Smith, 2021a), (Smith, 2021b).
The reference list
The reference list appears at the end, ordered alphabetically by author surname. A typical journal-article entry reads:
Smith, J. (2021) ‘Patterns of research participation’, Journal of Research Methods, 12(3), pp. 110–128.
A book entry:
Jones, A. (2020) Designing the Research Question. 2nd edn. London: Academic Press.
Core elements are author, year, title, source and locator. Italicise the title of the standalone work (the journal or the book), and place the article title in quotation marks where the variant requires it.
Institutional variants you will meet
Because Harvard is decentralised, you will encounter small but stubborn differences. The table below illustrates a few common points of divergence; treat them as examples, not as ranked authorities.
| Feature | Variant style A | Variant style B |
|---|---|---|
| Two-author connector | Smith and Jones | Smith & Jones |
| Year placement | Smith, J. (2021) | Smith, J., 2021. |
| Article title | ‘In quotes’ | No quotes, sentence case |
| Page abbreviation | pp. 110–128 | 110–128 |
The recurring lesson is the same one we stress in our for authors guidance: choose one variant, document it, and apply it without exception.
Citing electronic sources in Harvard
Web pages take the same author-date logic with an access date added, because online content can change. For a full walkthrough across styles, see our companion piece on how to cite a website correctly. For numeric and superscript alternatives used in engineering and medicine, see IEEE and AMA citation styles explained.
How Harvard fits the wider research output
Referencing is one strand of describing scholarship clearly. Controlled terminology in our dictionary and contributor roles via CRediT complement consistent citation by making the rest of a paper’s metadata as unambiguous as its reference list. Browse more in research outputs.
Frequently asked questions
Is Harvard the same as APA?
No. Both are author-date systems, but APA is a single published standard with fixed rules, whereas Harvard is a family of similar styles with institution-specific punctuation. Our APA essentials guide details the APA-specific conventions.
Which Harvard variant should I use?
The one your department, publisher or journal specifies. If none is mandated, pick a reputable institutional guide and follow it consistently throughout the document.
Do I need page numbers for paraphrases?
Page numbers are required for direct quotations and recommended when pointing to a specific passage. For general paraphrase of a whole source, author and year usually suffice.
How do I cite a source with no author?
Use the title in place of the author, or the organisation responsible. Practical strategies for missing metadata appear in our practitioner guide to citing sources.
