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.
Frequently asked questions
What is the main difference between APA and Harvard referencing?
The main differences are: (1) APA is a standardised system published by the American Psychological Association with a fixed rulebook (currently 7th edition); Harvard is a family of author-date styles with no single official standard, so the exact rules vary by institution. (2) APA has specific rules for the order and punctuation of reference list entries (including italicising journal titles but not article titles, and including DOI links); Harvard varies by institution but typically uses slightly different punctuation conventions. In practice, many universities' 'Harvard' style is close to but not identical to APA.
Does my university use APA or Harvard?
This depends on your subject and institution. Psychology, nursing, education, and social sciences departments in the US commonly require APA. UK universities in the same subjects often use Harvard (their own institutional variant). Business, management, and social sciences in the UK are often Harvard. Hard sciences typically use Vancouver or IEEE. Law uses OSCOLA. Check your module handbook or assignment brief — if it says 'Harvard', it almost certainly means your institution's specific Harvard variant, not a universal standard.
Can I use APA and Harvard interchangeably?
No. Although both are author-date styles that use (Author, Year) in-text citations, the reference list formatting differs in specific ways — italics placement, punctuation, inclusion of DOIs, how editions are shown, how multiple authors are listed. If your assignment specifies one style, use that style consistently. Mixing them will cost marks.
What does (Author, Year) look like in APA versus Harvard?
In-text citation format is almost identical: both use (Surname, Year) for a single author, e.g. (Smith, 2021). The key differences are in the reference list entries, not the in-text format. APA has more standardised rules about capitalisation, italics, and DOI inclusion; Harvard varies by institution but typically differs in where and how punctuation is placed around the publication details.
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