APA-referens (7:e uppl.)

Kail V. Robert & Rita Wicks- Nelson. (1993). Development Psychology (5th ed.). Prentice-Hall..

Chicago-referens (17:e uppl.)

Kail V. Robert och Rita Wicks- Nelson. Development Psychology. 5th ed. New Jersey: Prentice-Hall., 1993.

MLA-referens (9:e uppl.)

Kail V. Robert och Rita Wicks- Nelson. Development Psychology. 5th ed. Prentice-Hall., 1993.