Gaya APA

Nestor, P, G., Schutt, R, K. (2015). Research methods in psychology : investigating human behavior (2nd ed.). Thousand Oaks, California: SAGE Publications.

Gaya MLA

Nestor, Paul, G.., Schutt, Russell, K.. "Research methods in psychology : investigating human behavior". 2nd ed. Thousand Oaks, California: SAGE Publications, 2015. Text.