APA aipamena

Shaughnessy, J. J., & Zechmeister, E. B. (1990). Research methods in psychology (2nd ed.). McGraw-Hill.

Chicago Style aipamena

Shaughnessy, John J., and Eugene B. Zechmeister. Research Methods in Psychology. 2nd ed. New York: McGraw-Hill, 1990.

MLA aipamena

Shaughnessy, John J., and Eugene B. Zechmeister. Research Methods in Psychology. 2nd ed. McGraw-Hill, 1990.