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APA vs Harvard Referencing: Key Differences Explained

8 min read

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:

SituationAPAHarvard
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 sentenceSmith (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:

ElementAPAHarvard (typical)
Author separator&and
Year placementIn parentheses after authorsIn parentheses after authors
Article titleNo italics, sentence caseIn single quotes, sentence case
Journal nameItalics, title caseItalics, title case
Volume numberItalicsNot italics
Page format782–795pp. 782–795
DOI / URLRequired if availableOften optional; format varies
AmpersandAlways &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:

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?

SubjectCommon in UKCommon in US
PsychologyHarvard or APAAPA
Nursing / health sciencesHarvard or APAAPA
Sociology / social policyHarvardAPA
EducationHarvardAPA
Business / managementHarvardAPA
LawOSCOLA (UK), Bluebook (US)Bluebook
Sciences (biology, chemistry)Vancouver or numberedAPA or Vancouver
EngineeringIEEEIEEE
Humanities (English, History)MHRA, footnote-basedChicago, 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:

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.

Plan your essay before you write a single word

Use the free Essay Structure Planner to build your argument outline, map PEEL paragraphs, and structure your introduction and conclusion — then take the free Academic Writing Fundamentals course for the complete essay-writing system.