APA and Harvard are the two most common referencing styles in social sciences and humanities, and they are frequently confused — or treated as interchangeable. They are not. Both use the (Author, Year) pattern for in-text citations, which is why they look similar, but the reference list formatting has significant differences in punctuation, capitalisation, and required fields.
The fundamental difference
APA (American Psychological Association) is a published, standardised style with an official manual (currently 7th edition, 2020). Every detail is specified: what is italicised, where the period goes, when to include a DOI, how to abbreviate group authors. It is the same everywhere.
Harvard is a family of author-date styles, not a single standard. There is no official Harvard referencing organisation or rulebook. What universities call "Harvard" referencing is their own institutional variant — and it differs between universities. Manchester Harvard is not identical to Coventry Harvard, which is not identical to Cite Them Right Harvard. When your module handbook says "use Harvard referencing", check which specific guide your institution points to.
In-text citations: the similarities
Both styles use the same basic pattern in the body of the essay:
| Situation | APA | Harvard |
|---|---|---|
| Single author | (Smith, 2021) | (Smith, 2021) |
| Two authors | (Smith & Jones, 2021) | (Smith and Jones, 2021) |
| Three or more authors | (Smith et al., 2021) | (Smith et al., 2021) |
| Direct quote | (Smith, 2021, p. 45) | (Smith, 2021, p. 45) |
| Author in sentence | Smith (2021) found that... | Smith (2021) found that... |
The main in-text difference is the ampersand: APA uses & in parenthetical citations; most Harvard styles use and.
Reference list: where they diverge
This is where the real differences lie. Compare a journal article citation:
APA (7th edition):
Smith, J., & Jones, A. (2021). The effects of spaced practice on long-term retention. *Journal of Educational Psychology*, *113*(4), 782–795. https://doi.org/10.1037/edu0000000
Harvard (Cite Them Right variant):
Smith, J. and Jones, A. (2021) 'The effects of spaced practice on long-term retention', *Journal of Educational Psychology*, 113(4), pp. 782–795.
Key differences:
| Element | APA | Harvard (typical) |
|---|---|---|
| Author separator | & | and |
| Year placement | In parentheses after authors | In parentheses after authors |
| Article title | No italics, sentence case | In single quotes, sentence case |
| Journal name | Italics, title case | Italics, title case |
| Volume number | Italics | Not italics |
| Page format | 782–795 | pp. 782–795 |
| DOI / URL | Required if available | Often optional; format varies |
| Ampersand | Always & | Always and |
Books: a direct comparison
APA:
Baddeley, A., Eysenck, M. W., & Anderson, M. C. (2020). *Memory* (3rd ed.). Psychology Press.
Harvard (Cite Them Right):
Baddeley, A., Eysenck, M. W. and Anderson, M. C. (2020) *Memory*. 3rd edn. Abingdon: Routledge.
Key differences for books:
- APA does not include the place of publication; Harvard typically does
- APA abbreviates edition as
(3rd ed.); Harvard uses3rd edn. - APA lists publisher only; Harvard lists city and publisher
Websites and online sources
APA:
Office for National Statistics. (2023). *Population estimates for the UK*. https://www.ons.gov.uk/...
Harvard:
Office for National Statistics (2023) *Population estimates for the UK*. Available at: https://www.ons.gov.uk/... (Accessed: 15 March 2024).
Harvard typically requires an "Accessed" date for online sources; APA does not require it for stable URLs and DOIs.
Which should you use?
| Subject | Common in UK | Common in US |
|---|---|---|
| Psychology | Harvard or APA | APA |
| Nursing / health sciences | Harvard or APA | APA |
| Sociology / social policy | Harvard | APA |
| Education | Harvard | APA |
| Business / management | Harvard | APA |
| Law | OSCOLA (UK), Bluebook (US) | Bluebook |
| Sciences (biology, chemistry) | Vancouver or numbered | APA or Vancouver |
| Engineering | IEEE | IEEE |
| Humanities (English, History) | MHRA, footnote-based | Chicago, MLA |
Bottom line: If your assignment brief specifies Harvard, use your institution's specific Harvard guide (usually linked in the library resources). If it specifies APA, use the 7th edition APA manual or an APA-certified guide. If neither is specified, ask your module leader — guessing and getting it wrong costs marks on the easy stuff.
The practical checklist
When switching between APA and Harvard, these are the items most likely to trip you up:
- Ampersand (
&) vsandin reference list entries - Whether article titles are in italics or quote marks
- Whether the place of publication is required
- Whether a DOI/URL is required or optional
- How page numbers are formatted (with or without
pp.) - Whether the volume number is italicised
Use the Citation Reference Formatter to generate correctly formatted references in both APA and Harvard styles, and check the specific APA Referencing Guide and Harvard Referencing Guide for full examples.
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