Joseph Joel,under the direction of Gupta Vivek. (2005). Harrah's CRM Strategy. ICMR.
Chicago-čujuhus (17. p.)Joseph Joel,under the direction of Gupta Vivek. Harrah's CRM Strategy. Hyderabad: ICMR, 2005.
MLA-čujuhus (9. p.)Joseph Joel,under the direction of Gupta Vivek. Harrah's CRM Strategy. ICMR, 2005.
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