Não informado. (1968). Journal of Comparative and Physiological Psychology. American Psychological Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Journal of Comparative and Physiological Psychology. Baltimore, Md: American Psychological Association, 1968.
MLA-Zitierstil (8. Ausg.)Não informado. Journal of Comparative and Physiological Psychology. American Psychological Association, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.