American Psychological Association & Wrenn, C. G. Journal of counseling psychology. American Psychological Association.
Citazione stile Chigago Style (17a edizione)American Psychological Association e C. Gilbert Wrenn. Journal of Counseling Psychology. [Arlington, VA, etc.]: American Psychological Association.
Citatione MLA (9a ed.)American Psychological Association e C. Gilbert Wrenn. Journal of Counseling Psychology. American Psychological Association.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.