Cita APA (7th ed.)

Norušis, M. J. (1988). SPSS/PC+ studentware. SPSS Inc..

Cita Chicago (17th ed.)

Norušis, Marija J. SPSS/PC+ Studentware. Chicago, IL: SPSS Inc., 1988.

Cita MLA (9th ed.)

Norušis, Marija J. SPSS/PC+ Studentware. SPSS Inc., 1988.