Zikmund, W. G. (2007). Essentials of marketing research. Mason, OH: Thomson/South-Western.
शिकागो स्टाइल उद्धरणZikmund, William G. Essentials of Marketing Research. Mason, OH: Thomson/South-Western, 2007.
एमएलए उद्धरणZikmund, William G. Essentials of Marketing Research. Mason, OH: Thomson/South-Western, 2007.
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