Gaya APA

Norusis, M, J. (1988). SPSS / PC+'V2.0 Base Manual for the IBM PC/XT/AT and PS/2 . USA: SPSS, Inc..

Gaya MLA

Norusis, Marija, J. "SPSS / PC+'V2.0 Base Manual for the IBM PC/XT/AT and PS/2". USA: SPSS, Inc., 1988. Text.