Wiersma, William
Research methods in education: an introduction
Pearson/Allyn and Bacon, 2005
Buku Teks SO
Wiersma, William
Research methods in education: an introduction
Allyn and Bacon , 1991
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Wiersma, William
Research methods in education : an introduction
Pearson, 2009
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Methods of research in social psychology
Elliot Aronson...[et al.]
McGraw-Hill, 1990
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Bank, Marcus
Visual methods in social research
Sage, 2001
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