Citations Within Quotations
Sometimes when you are quoting from another source, the text you want to quote will include citations. You might wonder (a) whether you should keep these citations in the quote and (b) whether you should include references for the citations. The short answers are (a) yes and (b) no (see p. 173 of the Publication Manual of the American Psychological Association).
For example, let’s say you want to quote from the highlighted section of this article, written by Flynn in 2010.
In your own paper, you might write
As Flynn (2010) noted, “two phobias, fear of snakes and fear of flying, are particularly difficult to test in combination (Jackson, 2006) because many participants quickly become agitated” (p. 3).
Because you are relying on Flynn’s (2010) study, your reference list should include Flynn (2010), but it need not include Jackson (2006). You should include a Jackson (2006) reference only if you cite that work as a primary source elsewhere in your paper.