Kotler, P. (1999). Kotler on marketing. Free press.
Cita Chicago (17th ed.)Kotler, Philip. Kotler on Marketing. New york: Free press, 1999.
Cita MLA (9th ed.)Kotler, Philip. Kotler on Marketing. Free press, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.