Gaya APA

Zechmeister, J, J, S, E, B, J, S. (2006). Research Methods in Psychology (7). New York: McGraw Hill.

Gaya MLA

Zechmeister, John, J., Shaughnessy,, Eugene, B.Zechmeister,, Jeanne, S.. "Research Methods in Psychology". 7 New York: McGraw Hill, 2006. Text.