APA-referens (7:e uppl.)

Gardner, R. C. (2001). Psychological statistics using SPSS for Windows. Prentice Hall.

Chicago-referens (17:e uppl.)

Gardner, Robert C. Psychological Statistics Using SPSS for Windows. Upper Saddle River, N.J: Prentice Hall, 2001.

MLA-referens (9:e uppl.)

Gardner, Robert C. Psychological Statistics Using SPSS for Windows. Prentice Hall, 2001.