Dyfyniad APA

Shaughnessy, J. J., & Zechmeister, E. B. (1997). Research methods in psychology (4th ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Shaughnessy, John J., and Eugene B. Zechmeister. Research Methods in Psychology. 4th ed. New York: McGraw-Hill, 1997.

Dyfyniad MLA

Shaughnessy, John J., and Eugene B. Zechmeister. Research Methods in Psychology. 4th ed. McGraw-Hill, 1997.

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