Yegidis, B. l., & Weinbach, R. W. (1991). Instructor's manual for research methods... Longman.
Chicago Style (17. basım) AtıfYegidis, Bonnie l., ve Robert W. Weinbach. Instructor's Manual for Research Methods... New York: Longman, 1991.
MLA (9th ed.) AtıfYegidis, Bonnie l., ve Robert W. Weinbach. Instructor's Manual for Research Methods... Longman, 1991.
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