APA (7th ed.) Zitazioa

Howell, D. C. (2010). Statistical methods for psychology (7a. ed.). Wadsworth.

Chicago Style (17th ed.) Zitazioa

Howell, David C. Statistical Methods for Psychology. 7a. ed. Belmont: Wadsworth, 2010.

MLA (9th ed.) Zitazioa

Howell, David C. Statistical Methods for Psychology. 7a. ed. Wadsworth, 2010.