Kotler, P., & Armstrong, G. (1997). Principles of Marketing. Prentice-Hall of India.
Chicago Style (17th ed.) ZitazioaKotler, Philip, eta Gary Armstrong. Principles of Marketing. New Delhi: Prentice-Hall of India, 1997.
MLA (9th ed.) ZitazioaKotler, Philip, eta Gary Armstrong. Principles of Marketing. Prentice-Hall of India, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.