APA (7th ed.) Citation

(1990). SPSS, PC+ trends TM for the IBM PC, XT, AT and the PS 2. SPSS Inc.

Chicago Style (17th ed.) Citation

SPSS, PC+ Trends TM for the IBM PC, XT, AT and the PS 2. Chicago, Ill. <<[u.a.]>>: SPSS Inc, 1990.

MLA (9th ed.) Citation

SPSS, PC+ Trends TM for the IBM PC, XT, AT and the PS 2. SPSS Inc, 1990.

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