Gaya APA

Gravetter, F, J., Wallnau, L, B. (2008). Essentials of Statistics for the Behavioral Sciences 6'th Ed. (6). Australia: Thomson Wadsworth.

Gaya MLA

Gravetter, Frederick, J.., Wallnau, Larry, B.. "Essentials of Statistics for the Behavioral Sciences 6'th Ed.". 6 Australia: Thomson Wadsworth, 2008. Text.