APA (7th ed.) Citation

Kotler, P., & Armstrong, G. (1999). Principles of marketing (8th edition.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Kotler, Philip, and Gary Armstrong. Principles of Marketing. 8th edition. Singapore: Prentice-Hall, 1999.

MLA (9th ed.) Citation

Kotler, Philip, and Gary Armstrong. Principles of Marketing. 8th edition. Prentice-Hall, 1999.