Kotler, P., & Gray Armstrong. (1992). Principles of marketing (5th ed.). Prentice-Hall.
Chicago Edition CitationKotler, Philip, and Gray Armstrong. Principles of Marketing. 5th ed. New Delhi: Prentice-Hall, 1992.
MLA Edition CitationKotler, Philip, and Gray Armstrong. Principles of Marketing. 5th ed. Prentice-Hall, 1992.
Warning: These citations may not always be 100% accurate.