Craig, James R.
Methods of psychological research
Saunders, 1986
Buku Teks
Johnson, Janet Buttolph, 1950-
Political science research methods
CQ Press, 2012
Buku Teks SO
Wiersma, William
Research methods in education: an introduction
Pearson/Allyn and Bacon, 2005
Buku Teks
Wiersma, William
Research methods in education : an introduction
Pearson, 2009
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Allen, T. Harrell
New Methods in social science research
Praeger, 1978
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