Kotler, P., & Armstrong. (2001). Principles of marketing (9th ed.). New Jersey: Prentice Hall.
Chicago Style CitationKotler, Philip, and Armstrong. Principles of Marketing. 9th ed. New Jersey: Prentice Hall, 2001.
MLA CitationKotler, Philip, and Armstrong. Principles of Marketing. 9th ed. New Jersey: Prentice Hall, 2001.
Warning: These citations may not always be 100% accurate.