Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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