When you have used a secondary source, it must be clear that you have not read the primary source yourself.

In your text

You must name both the primary and the secondary source.

In your reference list

Include only the secondary source, since that is the only one you have actually read. Never list a source you have not read!

Example:

You are reading a book by Rosenquist (2008), in which she refers to something Freud wrote in 1919. You want to use this in your paper, but you have not read Freud yourself – only Rosenquist's account of it. In that case, you cite as follows:

Table showing how to cite secondary sources in your text and reference list
In-text citation	Reference list (secondary source only)
… (Freud, 1919, as cited in Rosenquist, 2008, p. 55). or According to Freud (1919, as cited in Rosenquist, 2008, p. 55), dreams are … . or direct quote "Direct quote" (Freud, 1919, p. 312, as cited in Rosenquist, 2008, p. 55).	Rosenquist, R. (2008). Andre reiser. Aschehoug.

Useful links

Secondary sources in APA-style https://apastyle.apa.org/style-grammar-guidelines/citations/secondary-sources