Não informado. (1947). Journal of Comparative and Physiological Psychology. American Psychological Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Journal of Comparative and Physiological Psychology. Arlington, Va: American Psychological Association, 1947.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Journal of Comparative and Physiological Psychology. American Psychological Association, 1947.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.