APA-referens (7:e uppl.)

Hurlock, E. B. (1975). Developmental psychology (4th ed.). McGraw-Hill [repr. National Book Store].

Chicago-referens (17:e uppl.)

Hurlock, Elizabeth B. Developmental Psychology. 4th ed. New York: McGraw-Hill [repr. National Book Store], 1975.

MLA-referens (9:e uppl.)

Hurlock, Elizabeth B. Developmental Psychology. 4th ed. McGraw-Hill [repr. National Book Store], 1975.