Cita APA (7th ed.)

Shaffer, D. R. (2002). Developmental psychology: Childhood and adolescence (Sixth edition.). Wadsworth Thomson Learning.

Cita Chicago (17th ed.)

Shaffer, David R. Developmental Psychology: Childhood and Adolescence. Sixth edition. Belmont, CA: Wadsworth Thomson Learning, 2002.

Cita MLA (9th ed.)

Shaffer, David R. Developmental Psychology: Childhood and Adolescence. Sixth edition. Wadsworth Thomson Learning, 2002.