Graziano, Anthony M.
Research methods : a process of inquiry
Pearson Education, 2014
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Dunn, Dana S.
Research methods for social psychology
Wiley-Blackwell, 2009
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Bartholomae, David J.
Mathematical methods in social sciences
John Wiley & Sons, 1981
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Crano, William D.
Principles and methods of social research
Lawrence Erlbaum Assossiate, 2002
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Hanushek, Eric A.
Statistical methods for social scientists
Academic Press, 1977
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