Cita APA (7a ed.)

Kotler, P. (1991). Principles of marketing (5th ed.). Prentice-Hall.

Cita Chicago Style (17a ed.)

Kotler, Philip. Principles of Marketing. 5th ed. New Delhi: Prentice-Hall, 1991.

Cita MLA (9a ed.)

Kotler, Philip. Principles of Marketing. 5th ed. Prentice-Hall, 1991.