Zikmund, W. G., & William G. Zikmund; Michael d'Amico. (2002). Effective marketing: Creating and keeping customers. Australia,Cincinnati, Ohio: South-Western College Pub.
शिकागो स्टाइल उद्धरणZikmund, William G., और William G. Zikmund; Michael d'Amico. Effective Marketing: Creating and Keeping Customers. Australia,Cincinnati, Ohio: South-Western College Pub, 2002.
एमएलए उद्धरणZikmund, William G., और William G. Zikmund; Michael d'Amico. Effective Marketing: Creating and Keeping Customers. Australia,Cincinnati, Ohio: South-Western College Pub, 2002.
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