APA-referens (7:e uppl.)

Hoffmann, L. (1988). Developmental psychology today (5th. ed.). Random House.

Chicago-referens (17:e uppl.)

Hoffmann, Lois. Developmental Psychology Today. 5th. ed. San Diego: Random House, 1988.

MLA-referens (9:e uppl.)

Hoffmann, Lois. Developmental Psychology Today. 5th. ed. Random House, 1988.