Kotler, P., & Armstrong, G. (1989). Principles of marketing (4. ed.). Prentice Hall.
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Chicago Style (17th ed.) Citation
Kotler, Philip, and Gary Armstrong. Principles of Marketing. 4. ed. Englewood Cliffs: Prentice Hall, 1989.
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MLA (9th ed.) Citation
Kotler, Philip, and Gary Armstrong. Principles of Marketing. 4. ed. Prentice Hall, 1989.
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Warning: These citations may not always be 100% accurate.