Cita APA

(1993). SPSS® base system: Syntax reference guide. Release 6.0. Chicago, Ill: SPSS Inc.

Chicago Style Citation

SPSS® Base System: Syntax Reference Guide. Release 6.0. Chicago, Ill: SPSS Inc, 1993.

Cita MLA

SPSS® Base System: Syntax Reference Guide. Release 6.0. Chicago, Ill: SPSS Inc, 1993.

Atenció: Aquestes cites poden no estar 100% correctes.