Cita APA (7th ed.)

Shaffer, D. R. (2001). Developmental psychology: Childhood and adolescence (6th ed.). Wadsworth Thomson Learning.

Cita Chicago (17th ed.)

Shaffer, David R. Developmental Psychology: Childhood and Adolescence. 6th ed. Australia ; Belmont, CA: Wadsworth Thomson Learning, 2001.

Cita MLA (8th ed.)

Shaffer, David R. Developmental Psychology: Childhood and Adolescence. 6th ed. Wadsworth Thomson Learning, 2001.