Still, . R. R. (2007). Sales management: Decisions, strategies and cases (5 edition.).
शिकागो स्टाइल उद्धरणStill, Richard R. Sales Management: Decisions, Strategies and Cases. 5 edition. Prentice Hall: New Delhi, 2007.
एमएलए उद्धरणStill, Richard R. Sales Management: Decisions, Strategies and Cases. 5 edition. 2007.
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