Dyfyniad APA

Shaughnessy, J. J. (2006). Research methods in psychology. Boston: McGraw-Hill, c2006.

Dyfyniad Arddull Chicago

Shaughnessy, John J. Research Methods in Psychology. Boston: McGraw-Hill, c2006, 2006.

Dyfyniad MLA

Shaughnessy, John J. Research Methods in Psychology. Boston: McGraw-Hill, c2006, 2006.

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