(1990). SPSS-PC+ graphics V3.1 for the IBM PC, XT, AT and PS 2 (2. print.). SPSS.
Chicago Style (17th ed.) CitationSPSS-PC+ Graphics V3.1 for the IBM PC, XT, AT and PS 2. 2. print. Chicago, Ill. u.a: SPSS, 1990.
MLA (9th ed.) CitationSPSS-PC+ Graphics V3.1 for the IBM PC, XT, AT and PS 2. 2. print. SPSS, 1990.
Warning: These citations may not always be 100% accurate.