APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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