APA (7e ed.) Bronvermelding

Shaffer, D. R. (1989). Developmental psychology: Childhood and adolescence (2nd ed.). Brooks/Cole.

Chicago (17e ed.) Bronvermelding

Shaffer, David R. Developmental Psychology: Childhood and Adolescence. 2nd ed. Pacific Grove, Calif.: Brooks/Cole, 1989.

MLA (8e ed.) Bronvermelding

Shaffer, David R. Developmental Psychology: Childhood and Adolescence. 2nd ed. Brooks/Cole, 1989.