APA (7th ed.) Citation

SPSS Inc. (1999). SPSS Base 9.0: Syntax reference guide. SPSS Inc.

Chicago Style (17th ed.) Citation

SPSS Inc. SPSS Base 9.0: Syntax Reference Guide. Chicago, IL: SPSS Inc, 1999.

MLA (8th ed.) Citation

SPSS Inc. SPSS Base 9.0: Syntax Reference Guide. SPSS Inc, 1999.

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