Kotler, P., & Armstrong, G. (2006). Principles of Marketing (11th ed.). Prentice Hall.
Cita Chicago (17th ed.)Kotler, Philip, i Gary Armstrong. Principles of Marketing. 11th ed. New Delhi, India: Prentice Hall, 2006.
Cita MLA (9th ed.)Kotler, Philip, i Gary Armstrong. Principles of Marketing. 11th ed. Prentice Hall, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.