Cita APA (7a ed.)

Norušis, M. J. (1990). SPSS/PC+ 4.0 Base Manual: For the IBM PC/XT/AT and PS/2. SPSS Inc.

Cita Chicago Style (17a ed.)

Norušis, Marija J. SPSS/PC+ 4.0 Base Manual: For the IBM PC/XT/AT and PS/2. Chicago, Ill. [u.a.]: SPSS Inc, 1990.

Cita MLA (9a ed.)

Norušis, Marija J. SPSS/PC+ 4.0 Base Manual: For the IBM PC/XT/AT and PS/2. SPSS Inc, 1990.