Não informado. (1967). Psychology of Learning and Motivation. Academic Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Psychology of Learning and Motivation. San Diego, Calif: Academic Press, 1967.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Psychology of Learning and Motivation. Academic Press, 1967.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.