Gaya APA

Kaplan, R, M., Saccuzzo, D, P. (2013). Psychological testing : principles, applications, and issues . California: Wadsworth Cengage Learning.

Gaya MLA

Kaplan, Robert, M.., Saccuzzo, Dennis, P.. "Psychological testing : principles, applications, and issues". California: Wadsworth Cengage Learning, 2013. Text.