Gaya APA

Carver, R, H., Nash, J, G. (2012). Doing Data Analysis with SPSS Version 18.0 (International edition). Boston: Cengage Learning.

Gaya MLA

Carver, Robert, H.., Nash, Jane, Gradwohl. "Doing Data Analysis with SPSS Version 18.0". International edition Boston: Cengage Learning, 2012. Text.