In scholarly work, a primary source reports original content; a secondary source refers to content first reported in another source.

  • Cite secondary sources sparingly—for instance, when the original work is out of print, unavailable, or available only in a language that you do not understand.
  • If possible, as a matter of good scholarly practice, find the primary source, read it, and cite it directly rather than citing a secondary source. For example, rather than citing an instructor’s lecture or a textbook or encyclopedia that in turn cites original research, find, read, and cite the original research directly (unless an instructor has directed you to do otherwise).

Secondary sources are covered in Section 8.6 of the APA Publication Manual, Seventh Edition

Follow these directions when citing a secondary source:

  • In the reference list, provide an entry for the secondary source that you used.
  • In the text, identify the primary source and write “as cited in” the secondary source that you used.

If the year of publication of the primary source is known, also include it in the text citation.

For example, if you read a work by Lyon et al. (2014) in which Rabbitt (1982) was cited, and you were unable to read Rabbitt’s work yourself, cite Rabbitt’s work as the original source, followed by Lyon et al.’s work as the secondary source. Only Lyon et al.’s work appears in the reference list.

(Rabbitt, 1982, as cited in Lyon et al., 2014)

If the year of the primary source is unknown, omit it from the in-text citation.

Allport’s diary (as cited in Nicholson, 2003)

From the APA Style blog

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Do you have questions about APA Style? Don’t be afraid to ask!

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Fall 2022 resources for students of APA Style

This post includes up-to-date student-friendly instructional resources about APA Style for easy reference.

How to cite an untitled music album reference

How to cite an untitled music album reference

Before you attempt to create a reference list entry for a music album in your paper, fact-check the recording artist or group’s discography to ensure the title of the album—or the lack of one—is accurate.

Last updated: July 2022Date created: September 2019