APA (7th ed.) Citation

SPSS Inc. (1997). SPSS Base 7.5 for Windows user's guide. SPSS Inc..

Chicago Style (17th ed.) Citation

SPSS Inc. SPSS Base 7.5 for Windows User's Guide. Chicago: SPSS Inc., 1997.

MLA (9th ed.) Citation

SPSS Inc. SPSS Base 7.5 for Windows User's Guide. SPSS Inc., 1997.

Warning: These citations may not always be 100% accurate.