Greenberg, P. (2010). CRM At the Speed of Light (4th.). Tata McGraw Hill.
Dyfyniad Arddull ChicagoGreenberg, Paul. CRM At the Speed of Light. 4th. Tata McGraw Hill, 2010.
Dyfyniad MLAGreenberg, Paul. CRM At the Speed of Light. 4th. Tata McGraw Hill, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.