Zyman, S. (1999). The end of marketing as we know it. London: Harper Business.
Chicago Style CitationZyman, Sergio. The End of Marketing As We Know It. London: Harper Business, 1999.
Cita MLAZyman, Sergio. The End of Marketing As We Know It. London: Harper Business, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.