Παραπομπή APA
Zikmund, W. G. (2003). Business research methods (7th ed.). Mason, Ohio: Thomson/South-Western.
Παραπομπή Chicago StyleZikmund, William G. Business Research Methods. 7th ed. Mason, Ohio: Thomson/South-Western, 2003.
Παραπομπή MLAZikmund, William G. Business Research Methods. 7th ed. Mason, Ohio: Thomson/South-Western, 2003.
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