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Dyfyniad Arddull ChicagoBATRA PRAMOD. SIMPLE WAYS TO MANAGE YORU SERVICE CUSTOMERS. NEW DELHI: THINK INCORPORTED, 1999.
Dyfyniad MLABATRA PRAMOD. SIMPLE WAYS TO MANAGE YORU SERVICE CUSTOMERS. THINK INCORPORTED, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.