How to Cite Sources in Harvard Referencing Style

Harvard referencing is one of the most widely used citation systems in universities across the United Kingdom, Australia, and many other countries. Unlike APA or MLA, Harvard is not governed by a single organization or official manual. Instead, it is an umbrella term for a family of author-date citation styles, and individual institutions often publish their own variant with slightly different formatting rules. Despite these variations, the core principle is always the same: cite the author's last name and the year of publication in the text, and provide a full alphabetical reference list at the end of the paper.

If you want to skip the manual formatting, the AllCitations Harvard generator can produce correctly formatted references in seconds. But learning the underlying rules will help you catch errors and adapt to whichever institutional variant your university requires.

What Is Harvard Referencing?

The term "Harvard referencing" first appeared in the late 19th century when a zoologist at Harvard University used an author-date system in a published paper. The approach spread rapidly through scientific writing because it allowed readers to locate sources quickly without flipping to footnotes. Today, "Harvard style" describes any author-date system that pairs an in-text parenthetical citation with an alphabetical reference list at the end of the document.

Because no single governing body controls the format, several widely used variants exist:

Most differences between these variants are minor - punctuation around dates, capitalization of titles, or the treatment of URLs. The examples in this guide follow the Cite Them Right 12th edition conventions, which is the variant supported by the AllCitations Harvard generator.

In-Text Citations

Harvard in-text citations follow the author-date model. The basic format is:

(Author Surname, Year)

Key rules for in-text citations:

• One author: (Smith, 2023)
• Two authors: (Smith and Jones, 2023) - use "and" rather than an ampersand
• Three or more authors: (Smith et al., 2023) - from the very first citation
• Direct quote: Include a page number after the year: (Smith, 2023, p. 45)
• Multiple works by the same author in the same year: Add lowercase letters after the year: (Smith, 2023a), (Smith, 2023b)
• Organization as author: (World Health Organization, 2022) - spell out in full on first use; abbreviations may be used after that if the organization is well known
• No author: Use the title in italics for longer works or in single quotation marks for shorter works, followed by the year: (Understanding climate, 2020)
• No date: Replace the year with "no date": (Smith, no date)

Narrative vs. Parenthetical

Harvard allows both narrative and parenthetical citations. In a narrative citation the author name forms part of the sentence:

Smith (2023) argues that renewable energy investment has increased significantly over the past decade.

In a parenthetical citation the entire reference appears inside brackets at the end of the clause:

Renewable energy investment has increased significantly over the past decade (Smith, 2023).

Place the parenthetical citation before the full stop at the end of a sentence, not after it.

Building the Reference List

The reference list appears at the end of your paper under the heading Reference List (not "Bibliography," which has a different meaning in Harvard style - a bibliography includes works consulted but not cited). Entries are arranged alphabetically by the first author's surname.

General formatting rules:

• Use a hanging indent (first line flush left, subsequent lines indented) for each entry
• Author names: Surname, Initial(s). For multiple authors, list all authors separated by commas with "and" before the final author
• Year: In parentheses immediately after the author
• Titles of books and reports: Italicized, with sentence-case capitalization
• Titles of journal articles: Not italicized, in sentence case
• Journal names: Italicized, in title case
• Edition information: Include after the title when relevant, e.g., 3rd edn.
• Available at: For online sources, include the URL preceded by "Available at:" and followed by the access date in parentheses

Worked Examples

Below are worked examples for the most common source types. Each example shows the full reference list entry and the matching in-text citation.

Book with One Author

Reference entry:

Mitchell, T. (2019) Carbon democracy: political power in the age of oil. 2nd edn. London: Verso.

In-text citation: (Mitchell, 2019)

Book with Multiple Authors

Reference entry:

Pear, R. and Shields, G. (2022) Cite them right: the essential referencing guide. 12th edn. London: Bloomsbury Academic.

In-text citation: (Pear and Shields, 2022)

Journal Article

Reference entry:

Chen, L., Wang, D. and Patel, R. (2023) 'The impact of remote work on urban transportation patterns', Journal of Urban Planning, 48(3), pp. 210-228. Available at: https://doi.org/10.1080/example.

In-text citation: (Chen, Wang and Patel, 2023) for the first citation; some variants allow (Chen et al., 2023) for three or more authors from the start.

Website

Reference entry:

National Health Service (2024) Symptoms of type 2 diabetes. Available at: https://www.nhs.uk/conditions/type-2-diabetes/symptoms/ (Accessed: 15 March 2025).

In-text citation: (National Health Service, 2024)

Report

Reference entry:

World Health Organization (2023) World malaria report 2023. Geneva: World Health Organization. Available at: https://www.who.int/publications/example (Accessed: 10 January 2025).

In-text citation: (World Health Organization, 2023)

Lecture or Presentation

Reference entry:

Thompson, A. (2024) 'Introduction to machine learning' [Lecture]. CS201: Artificial Intelligence. University of Edinburgh. 14 October.

In-text citation: (Thompson, 2024)

Harvard vs. APA: Key Differences

Harvard and APA are both author-date systems, and students sometimes confuse the two. While they share the same basic logic, there are meaningful differences in formatting. For a broader comparison of major styles, see our guide on APA vs. MLA.

The most noticeable practical difference is that Harvard places journal article titles in single quotation marks and typically requires an access date for every online source, whereas APA does not use quotation marks for article titles and only asks for an access date when the content is likely to change over time.

Institutional Variations and How to Handle Them

Because Harvard has no central manual, your university's referencing guide is the final authority. Common points of variation include:

• Quotation marks around article titles: Cite Them Right uses single quotation marks; some Australian guides omit them entirely
• "Available at:" vs. direct URL: Some variants write "Available at:" before URLs; others simply include the URL
• Access dates: Nearly all Harvard variants require them for web pages; some require them for every online source including journal articles
• Capitalization: Most variants use sentence case for titles, but a few institutional guides prefer title case for book titles
• "and" vs. "&" between authors: Cite Them Right uses "and"; a few Harvard variants use "&" in parenthetical citations

When in doubt, check your university's library website for a downloadable referencing guide. Most UK universities publish a PDF or webpage that specifies exactly which Harvard variant they expect.

Common Mistakes to Avoid

1. Using "Bibliography" instead of "Reference List." In Harvard style, a bibliography includes all works consulted, even those not cited. Most assignments ask for a reference list, which includes only sources you have actually cited.

1. Forgetting the access date for websites. Unlike APA 7, Harvard generally requires an access date for every online source.

1. Using an ampersand instead of "and." Harvard (Cite Them Right) consistently uses "and" between author names, both in the text and in the reference list.

1. Omitting page numbers for direct quotes. Any word-for-word quotation must include a page number: (Smith, 2023, p. 12).

1. Inconsistent capitalization. Use sentence case for all titles in the reference list. Only the first word, the first word after a colon, and proper nouns are capitalized.

1. Mixing Harvard variants. Stick to one institutional guide throughout your paper. Do not combine Cite Them Right conventions with Deakin conventions in the same document.

Quick-Reference Table

For a full list of supported citation styles, visit the AllCitations styles page.