Citazione APA

Kotler, P., & Armstrong, G. (1991). Principles of marketing (8th ed.). Prentice hall of India.

Stile di citazione Chicago

Kotler, Philip, e Gary Armstrong. Principles of Marketing. 8th ed. New Delhi: Prentice hall of India, 1991.

Citazione MLA

Kotler, Philip, e Gary Armstrong. Principles of Marketing. 8th ed. Prentice hall of India, 1991.