Specific examples pertaining any secondary sources examples
Chambers (1983, p. 25) gives Whiteley’s (1979) definition of emotion as “a response to situations of one specific type ...”
In this example, the reference actually used was Chambers (1983), not Whiteley (1979).
A reference list entry must be made for Chambers, but can be made for both items if it is useful to your reader.
Reference: Chambers, P.K. (1983) Your emotions revealed. New York: Lacrima and Ductule.
Reference: Whiteley, B.C. (1979) ‘Emotional response’, Brain Talk, vol. 2, no. 12, pp. 234-5. (optional - at your discretion)