Joseph Joel,under the direction of Gupta Vivek. (2005). Harrah's CRM Strategy. ICMR.
Cita Chicago (17th ed.)Joseph Joel,under the direction of Gupta Vivek. Harrah's CRM Strategy. Hyderabad: ICMR, 2005.
Cita MLA (9th ed.)Joseph Joel,under the direction of Gupta Vivek. Harrah's CRM Strategy. ICMR, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.