Gaya APA

Pewlham, B, W., Blanton, H. (2007). Conducting Research in Psychology : Measuring the Weight of Smoke 3'rd Ed. (3). USA: Thomson Wadsworth.

Gaya MLA

Pewlham, Brett, W.., Blanton, Hart. "Conducting Research in Psychology : Measuring the Weight of Smoke 3'rd Ed.". 3 USA: Thomson Wadsworth, 2007. Text.