APA-referens (7:e uppl.)

Howell, D. C. (1987). Statistical methods for psychology (Second edition.). Duxbury Press.

Chicago-referens (17:e uppl.)

Howell, David C. Statistical Methods for Psychology. Second edition. Boston: Duxbury Press, 1987.

MLA-referens (8:e uppl.)

Howell, David C. Statistical Methods for Psychology. Second edition. Duxbury Press, 1987.