Kotler, P., & Armstrong, G. (1991). Principles of marketing (5th ed.). New Delhi: Prentice-Hall of India.
Chicago Style CitationKotler, Philip., and Gay Armstrong. Principles of Marketing. 5th ed. New Delhi: Prentice-Hall of India, 1991.
MLA CitationKotler, Philip., and Gay Armstrong. Principles of Marketing. 5th ed. New Delhi: Prentice-Hall of India, 1991.
Warning: These citations may not always be 100% accurate.