Zikmund, W. G. (1997). Business research methods (5th ed.). Dryden Press.
Chicago Style (17. basım) AtıfZikmund, William G. Business Research Methods. 5th ed. Fort Worth: Dryden Press, 1997.
MLA (9th ed.) AtıfZikmund, William G. Business Research Methods. 5th ed. Dryden Press, 1997.
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