APA-Zitierstil (7. Ausg.)

Wadsworth, B. J. (1984). Piagets theory of cognitive and affective development (3. ed.). Longman.

Chicago-Zitierstil (17. Ausg.)

Wadsworth, Barry J. Piagets Theory of Cognitive and Affective Development. 3. ed. New York u.a: Longman, 1984.

MLA-Zitierstil (9. Ausg.)

Wadsworth, Barry J. Piagets Theory of Cognitive and Affective Development. 3. ed. Longman, 1984.