Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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