Gaya APA
Carver, R, H., Nash, G, J.
(2012).
Doing Data Analysis with SPSS Version 18
.
America:
Cengage Learning.
Gaya MLA
Carver, Robert, H., Nash, Gradwohl,, Jane.
"Doing Data Analysis with SPSS Version 18".
America:
Cengage Learning,
2012.
Text.