Styl cytowania APA

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

Styl cytowania Chicago

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

Styl cytowania MLA

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