How to Cite Sources in APA Format
Overview
APA format uses author-date in-text citations (Author, Year) paired with an alphabetized Reference list at the end of the paper. APA 7th edition organizes every source around four elements: Author, Date, Title, and Source. It is the standard citation style in psychology, education, and the social sciences.
The Four Core Elements
Every APA reference follows the same four-part template:
- Author. Last name, Initials. For organizations, spell out the full name.
- (Date). Year of publication in parentheses. For web pages, use the full date if available.
- Title. Use sentence case: capitalize only the first word, the first word after a colon, and proper nouns. Italicize standalone works (books, reports). Do not italicize article or chapter titles.
- Source. The publisher, journal name, URL, or DOI.
This four-element system applies universally. Once you learn the template, you can cite any source type by identifying which details fill each slot.
In-Text Citations
APA in-text citations include the author and year, separated by a comma. Add the page number for direct quotes.
Parenthetical citation:
Early intervention programs show lasting effects on literacy outcomes (Baker, 2022).
Narrative citation (author named in sentence):
Baker (2022) found that early intervention programs show lasting effects on literacy outcomes.
Direct quote:
The study confirmed that "phonemic awareness training before age six produces measurable gains" (Baker, 2022, p. 134).
Multiple authors:
- Two: (Baker & Chen, 2022)
- Three or more: (Baker et al., 2022)
No author (use shortened title):
(Early Literacy Report, 2022) or ("New Findings," 2022)
Reference List: Common Source Examples
**Book (single author):** Kahneman, D. (2011). *Thinking, fast and slow*. Farrar, Straus and Giroux. **Journal article with DOI:** Baker, L. M. (2022). Phonemic awareness and early literacy outcomes. *Journal of Educational Psychology*, *114*(3), 301-318. https://doi.org/10.1037/edu0000712 **Website with author:** World Health Organization. (2025, January 10). *Mental health and COVID-19*. https://www.who.int/news-room/fact-sheets/detail/mental-health-covid-19 **Website with no author:** *Climate change indicators*. (2024, June). U.S. Environmental Protection Agency. https://www.epa.gov/climate-indicators **Edited book chapter:** Morris, T. (2020). Cognitive load in multimedia learning. In R. Mayer (Ed.), *The Cambridge handbook of multimedia learning* (3rd ed., pp. 45-67). Cambridge University Press.
Citing Direct Quotes vs. Paraphrases
Direct quotes require the author, year, and a page number (or paragraph number for sources without pages):
- (Baker, 2022, p. 134) or (Baker, 2022, para. 7)
Paraphrases require only the author and year:
- (Baker, 2022)
APA strongly encourages paraphrasing over direct quoting. When you do quote, keep it short and always explain the quote's relevance in your own words. Long quotations (40+ words) must be formatted as block quotes, indented 0.5 inches with no quotation marks.
Reference List Formatting
The Reference list appears on a new page after the body of the paper.
- Title: "References" centered at the top, bold
- Alphabetical order: sort by the first author's last name
- Hanging indent: first line flush left, subsequent lines indented 0.5 inches
- Double-spaced: the entire list, including between entries
- DOIs as hyperlinks: format DOIs as "https://doi.org/..." and leave them as live hyperlinks
- No "Retrieved from": APA 7th edition dropped this phrase; just provide the URL directly
Frequently Asked Questions
APA uses author-date citations (Smith, 2024) and is standard in social sciences, psychology, and education. MLA uses author-page citations (Smith 42) and is standard in humanities and literature. The reference page formats also differ significantly.
Use the first few words of the title in the in-text citation. Italicize the title if it is a standalone work, or use quotation marks if it is part of a larger work. On the Reference list, start the entry with the title instead of the author.
Include a DOI whenever one is available, as DOIs are permanent identifiers. If there is no DOI but the source is online, include the URL. For print-only sources, neither is needed.
For one or two authors, list all names every time. For three or more authors, use the first author followed by "et al." in every in-text citation: (Garcia et al., 2023). On the Reference list, include up to 20 authors before using an ellipsis.
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