Elmes, David G.
Research methods in psychology
Brooks/Cole, 1999
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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 Hil , 2015
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Elmes, David G.
Metode penelitian dalam psikologi = Research methods in psychology
Salemba Humanika, 2014
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