Cita APA (7th ed.)

Kotler, P. (1994). Principles of marketing / Philip Kotler, Gary Armstrong (6th ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Kotler, Philip. Principles of Marketing / Philip Kotler, Gary Armstrong. 6th ed. Englewood Cliffs: Prentice-Hall, 1994.

Cita MLA (9th ed.)

Kotler, Philip. Principles of Marketing / Philip Kotler, Gary Armstrong. 6th ed. Prentice-Hall, 1994.