Shaughnessy, John J.
Research methods in psychology
McGraw-Hill, 2006
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Langdridge, Darren
Introduction to research methods and data analysis in psychology / Darren Langdridge
Pearson, 2004
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Kerlinger, Fred Nichols, 1910-
Foundations of behavioral research
Holt, Rinehart and Winston, 1964
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Kerlinger, Fred Nichols, 1910-
Foundations of behavioral research
Harcourt Brace College Publishers, 1973
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Kerlinger, Fred Nichols, 1910-
Foundations of behavioral research
Harcourt Brace College Publishers, 1992
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