APA (7th ed.) Citation

Kotler, P., & Armstrong, G. (1997). Marketing: An introduction (4th ed.). Prentice Hall.

Chicago Style (17th ed.) Citation

Kotler, Philip, and Gary Armstrong. Marketing: An Introduction. 4th ed. New Jersey: Prentice Hall, 1997.

MLA (9th ed.) Citation

Kotler, Philip, and Gary Armstrong. Marketing: An Introduction. 4th ed. Prentice Hall, 1997.