APA (7th ed.) Citation

SPSS INC. (1989). SPSS PC FOR THE IBM PC XT. SPSS INC.

Chicago Style (17th ed.) Citation

SPSS INC. SPSS PC FOR THE IBM PC XT. CHICAGO: SPSS INC, 1989.

MLA (9th ed.) Citation

SPSS INC. SPSS PC FOR THE IBM PC XT. SPSS INC, 1989.

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