APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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