Gaya APA

Cohen, R, J., Swerdlik, M, E. (2005). Psychological Testing and Assessment : An Introduction to Tests and Measurement 4'th Ed. (4). London: Mayfield Publishing Company.

Gaya MLA

Cohen, Ronald, Jay., Swerdlik, Mark, E.. "Psychological Testing and Assessment : An Introduction to Tests and Measurement 4'th Ed.". 4 London: Mayfield Publishing Company, 2005. Text.