APA-referens (7:e uppl.)

Gravetter, F. J., & Wallnau, L. B. (2013). Statistics for the behavioral sciences (9th ed.). Wadsworth Cengage Learning.

Chicago-referens (17:e uppl.)

Gravetter, Frederick J., och Larry B. Wallnau. Statistics for the Behavioral Sciences. 9th ed. Belmont, CA: Wadsworth Cengage Learning, 2013.

MLA-referens (8:e uppl.)

Gravetter, Frederick J., och Larry B. Wallnau. Statistics for the Behavioral Sciences. 9th ed. Wadsworth Cengage Learning, 2013.