Cita APA

Kotler, P., & Armstrong, G. (1991). Principles of marketing (5th ed.). Prentice Hall.

Citación estilo Chicago

Kotler, Philip, and Gary Armstrong. Principles of Marketing. 5th ed. Upper Saddle River, N.J: Prentice Hall, 1991.

Cita MLA

Kotler, Philip, and Gary Armstrong. Principles of Marketing. 5th ed. Prentice Hall, 1991.