APA-referens (7:e uppl.)

Spencer, T. D., & Kass, N. (1970). Perspectives in child psychology: Research and review. McGraw-Hill.

Chicago-referens (17:e uppl.)

Spencer, Thomas D., och Norman Kass. Perspectives in Child Psychology: Research and Review. New York: McGraw-Hill, 1970.

MLA-referens (9:e uppl.)

Spencer, Thomas D., och Norman Kass. Perspectives in Child Psychology: Research and Review. McGraw-Hill, 1970.