Gaya APA

Gravetter, F, J., Wallnau, L, B. (2013). Statistics for the behavioral sciences . Wadsworth.: Wadsworth : Cengage, 2013.

Gaya MLA

Gravetter, Frederick, J.., Wallnau, Larry, B.. "Statistics for the behavioral sciences". Wadsworth.: Wadsworth : Cengage, 2013, 2013. Text.