Kotler, P., & Armstrong, G. (2001). Principles of marketing (9th ed.). Upper Saddle River: Prentice Hall.
शिकागो स्टाइल उद्धरणKotler, Philip, और Gary Armstrong. Principles of Marketing. 9th ed. Upper Saddle River: Prentice Hall, 2001.
एमएलए उद्धरणKotler, Philip, और Gary Armstrong. Principles of Marketing. 9th ed. Upper Saddle River: Prentice Hall, 2001.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.