Παραπομπή σε μορφή APA (7η εκδ.)

Wadsworth, B. J. (1996). Piaget's theory of cognitive and affective development: Foundations of constructivism (5th edition.). Longman Publishers USA.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Wadsworth, Barry J. Piaget's Theory of Cognitive and Affective Development: Foundations of Constructivism. 5th edition. White Plains, N.Y: Longman Publishers USA, 1996.

Παραπομπή σε μορφή MLA (8th εκδ.)

Wadsworth, Barry J. Piaget's Theory of Cognitive and Affective Development: Foundations of Constructivism. 5th edition. Longman Publishers USA, 1996.