Coolican, Hugh
Research methods and statistics in psychology
Psychology Press, 2014
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Methods of research in social psychology
Elliot Aronson...[et al.]
McGraw-Hill , 1990
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Shaughnessy, John J.
Research methods in psychology
McGraw-Hill, 2012
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Shaughnessy, John J.
Research methods in psychology
McGraw-Hill, 1990
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Shaughnessy, John J.
Research methods in psychology
McGraw-Hill, 1997
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