Q. How do I cite a work that is discussed in another source using APA?

When you need to cite a source that is not available, APA recommends that you name the original source within the text of your paper and provide a citation for the secondary source in the reference list. For example:

In-Text Citation: (Kirk & Joseph, 1999, as cited in Thompson, 2001, p. 55)

Reference List Entry:
Thompson, K. (2001). Psychological predictors of weight gain. Psychological Reports, 92(1), 42-57.

You do not put the secondary source in your reference list unless you opt to cite it directly. It is always best to use the original source when you can. Ask for assistance when you need help locating a source.