APA (7th ed.) Citation

Kotler, P., & Armstrong, G. (2008). Principles of marketing (12th ed.). Prentice Hall.

Chicago Style (17th ed.) Citation

Kotler, Philip, and Gary Armstrong. Principles of Marketing. 12th ed. New Delhi: Prentice Hall, 2008.

MLA (9th ed.) Citation

Kotler, Philip, and Gary Armstrong. Principles of Marketing. 12th ed. Prentice Hall, 2008.