Não informado. (2011). Professional Psychology, Research and Practice. American Psychological Association.
Chicago Style (17. basım) AtıfNão informado. Professional Psychology, Research and Practice. Arlington, Va: American Psychological Association, 2011.
MLA (8th ed.) AtıfNão informado. Professional Psychology, Research and Practice. American Psychological Association, 2011.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..