APA (7e ed.) Bronvermelding

Hoffman, L. (1988). Developmental psychology today (5th ed.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Hoffman, Lois. Developmental Psychology Today. 5th ed. New York: McGraw-Hill, 1988.

MLA (9e ed.) Bronvermelding

Hoffman, Lois. Developmental Psychology Today. 5th ed. McGraw-Hill, 1988.