LibAnswers: APA FAQs

When citing a quote from another author/work within the work that you are reading, the quote then becomes identified as the "primary source" and what you are reading is identified as the "secondary source". 

APA recommends using citing something from a secondary source as little as possible, but there are some scenarios that make access to the primary source impossible. According to the 7th edition of the Publication Manual of the American Psychological Association:, "When citing a secondary source, provide a reference list entry for the secondary source that you used [the source that you're reading]. In the text, identify the primary source [the quote's origin] and then write 'as cited in' the secondary source that you used"(American Psychological Association, 2020, p. 258). 

Only the secondary source, aka the source that you read, is identified in the reference list. You only make reference to the primary source in the in-text citations.

For more information, and examples:

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

References

American Psychological Association. (2020). Publication manual of the American Psychological Association (7th ed.). https://doi.org/10.1037/0000165-000