Cita APA (7a ed.)

Wadsworth, B. J. (1971). Piaget's Theory of cognitive and affective development (5. ed.). Longman.

Cita Chicago Style (17a ed.)

Wadsworth, Barry J. Piaget's Theory of Cognitive and Affective Development. 5. ed. London: Longman, 1971.

Cita MLA (8a ed.)

Wadsworth, Barry J. Piaget's Theory of Cognitive and Affective Development. 5. ed. Longman, 1971.