Shaughnessy, John J.
Research methods in psychology
McGrawhill , 1994
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Dunn, Dana S.
Research methods for social psychology
Wiley-Blackwell, 2009
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Coolican, Hugh
Research methods and statistics in psychology
Psychology Press, 2014
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Coolican, Hugh
Research methods and statistics in psychology
Hodder & Stoughton, 2009
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Goodwin, C. James
Research in psychology: methods and design
Wiley , 2010
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