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