Sekaran, U. (2009). Research methods for business: A skill-building approach (4 edition.).
Chicago Stili AlıntıSekaran, Uma. Research Methods for Business: A Skill-building Approach. 4 edition. John Wiley & Sons Inc., New York, 2009.
MLA AlıntıSekaran, Uma. Research Methods for Business: A Skill-building Approach. 4 edition. 2009.
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