APA (7th ed.) Citation

(1998). SPSS Base 8.0: User's guide. SPSS Inc..

Chicago Style (17th ed.) Citation

SPSS Base 8.0: User's Guide. Illinois: SPSS Inc., 1998.

MLA (9th ed.) Citation

SPSS Base 8.0: User's Guide. SPSS Inc., 1998.

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