Cita APA (7th ed.)

Norusis, M. J. (2003). SPSS 12.0 statistical procedures companion. Prentice Hall.

Cita Chicago (17th ed.)

Norusis, Marija J. SPSS 12.0 Statistical Procedures Companion. Upper Saddle River, N.J: Prentice Hall, 2003.

Cita MLA (9th ed.)

Norusis, Marija J. SPSS 12.0 Statistical Procedures Companion. Prentice Hall, 2003.