APA (7th ed.) Citation

Kotler, P. (1991). Principles of marketing (5th.). Prentic Hall.

Chicago Style (17th ed.) Citation

Kotler, Philip. Principles of Marketing. 5th. New Delhi: Prentic Hall, 1991.

MLA (9th ed.) Citation

Kotler, Philip. Principles of Marketing. 5th. Prentic Hall, 1991.