APA (7th ed.) Citation

(1993). SPSS for Windows, trends, release 6.0. SPSS.

Chicago Style (17th ed.) Citation

SPSS for Windows, Trends, Release 6.0. Chicago: SPSS, 1993.

MLA (9th ed.) Citation

SPSS for Windows, Trends, Release 6.0. SPSS, 1993.

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