Costell, J. (2003). Science of Sales Success. Amacom.
Cita Chicago Style (17a ed.)Costell, Josh. Science of Sales Success. Amacom, 2003.
Cita MLA (8a ed.)Costell, Josh. Science of Sales Success. Amacom, 2003.
Precaución: Estas citas no son 100% exactas.