Barker, Chris
Research methods in clinical psychology : an introduction for students and practitioners
John Wiley & Sons, 2002
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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, 1997
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Shaughnessy, John J.
Research methods in psychology
McGraw-Hill, 2003
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Elmes, David G
Research methods in psychology
Thomson/Wadsworth, 2006
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