APA (7th ed.) Citation

SPSS Inc. (1999). SPSS Base 9.0 applications guide. SPSS Inc..

Chicago Style (17th ed.) Citation

SPSS Inc. SPSS Base 9.0 Applications Guide. Chicago, IL: SPSS Inc., 1999.

MLA (9th ed.) Citation

SPSS Inc. SPSS Base 9.0 Applications Guide. SPSS Inc., 1999.

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