Cita APA (7th ed.)

Kotler, P., & Armstrong, G. (1989). Principles of marketing (4th ed.). Prentice Hall International f24K Printing).

Cita Chicago (17th ed.)

Kotler, Philip, i Gary Armstrong. Principles of Marketing. 4th ed. New Jersey, e(Philippines: Prentice Hall International f24K Printing), 1989.

Cita MLA (9th ed.)

Kotler, Philip, i Gary Armstrong. Principles of Marketing. 4th ed. Prentice Hall International f24K Printing), 1989.