Marks, R. B. (1985). Personal Selling: An Interactive Approach. Allyn and Bacon.
शिकागो स्टाइल उद्धरणMarks, Ronald B. Personal Selling: An Interactive Approach. Boston: Allyn and Bacon, 1985.
एमएलए उद्धरणMarks, Ronald B. Personal Selling: An Interactive Approach. Allyn and Bacon, 1985.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.