Cita APA (7th ed.)

Kotler, P. (1989). Principles of marketing (3rd.). Prentice Hall.

Cita Chicago (17th ed.)

Kotler, Philip. Principles of Marketing. 3rd. New Delhi: Prentice Hall, 1989.

Cita MLA (9th ed.)

Kotler, Philip. Principles of Marketing. 3rd. Prentice Hall, 1989.