Não informado. (1976). Contemporary Educational Psychology. Academic Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Contemporary Educational Psychology. San Diego, Calif: Academic Press, 1976.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Contemporary Educational Psychology. Academic Press, 1976.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.