SPSS Inc., Marketing Department. (1988). SPSS /PC+ v2.0 Base manual: For the IBM PC/XT/AT and PS/2. SPSS Inc.
Chicago Style (17th ed.) CitationSPSS Inc., Marketing Department. SPSS /PC+ V2.0 Base Manual: For the IBM PC/XT/AT and PS/2. USA: SPSS Inc, 1988.
MLA (9th ed.) CitationSPSS Inc., Marketing Department. SPSS /PC+ V2.0 Base Manual: For the IBM PC/XT/AT and PS/2. SPSS Inc, 1988.
Warning: These citations may not always be 100% accurate.