Cita APA

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

Chicago Edition Citation

Kotler, Philip, i Gary Armstrong. Principles of Marketing. 8th ed. New Delhi: Prentice Hall, 1999.

Cita MLA

Kotler, Philip, i Gary Armstrong. Principles of Marketing. 8th ed. Prentice Hall, 1999.