APA Style
SPSS/PC+ studentware. (1988).
Chicago:
SPSS Inc..
Chicago Style
SPSS/PC+ studentware.
.
Chicago:
SPSS Inc.,
1988.
Text.
MLA Style
SPSS/PC+ studentware.
.
Chicago:
SPSS Inc.,
1988.
Text.
Turabian Style
SPSS/PC+ studentware.
Chicago:
SPSS Inc.,
1988.
Print.