Emory, W., & Cooper, D. R. (1991). Business research methods (4th ed.). Irwin.
Chicago Style (17. basım) AtıfEmory, William, ve Donald R. Cooper. Business Research Methods. 4th ed. Homewood, Ill: Irwin, 1991.
MLA (9th ed.) AtıfEmory, William, ve Donald R. Cooper. Business Research Methods. 4th ed. Irwin, 1991.
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