Zyman, S. (1999). The end of marketing as we know it. Harper Collins.
Cita Chicago Style (17a ed.)Zyman, Sergio. The End of Marketing as We Know It. New York: Harper Collins, 1999.
Cita MLA (8a ed.)Zyman, Sergio. The End of Marketing as We Know It. Harper Collins, 1999.
Precaución: Estas citas no son 100% exactas.