APA Citation

(2003). SPSS base 12.0 user's guide. Chicago, IL: SPSS Inc..

Chicago Style Citation

SPSS Base 12.0 User's Guide. Chicago, IL: SPSS Inc., 2003.

MLA Citation

SPSS Base 12.0 User's Guide. Chicago, IL: SPSS Inc., 2003.

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