APA (7th ed.) Citation

Norusis, M. J. (1993). SPSS for windows base system user's guide: Release 6.0. SPSS Inc.

Chicago Style (17th ed.) Citation

Norusis, Marija J. SPSS for Windows Base System User's Guide: Release 6.0. Chicago, Ill: SPSS Inc, 1993.

MLA (9th ed.) Citation

Norusis, Marija J. SPSS for Windows Base System User's Guide: Release 6.0. SPSS Inc, 1993.