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Dyfyniad Arddull ChicagoFitzsimmons, Mona J. Service Management. 5th. Boston: McGraw-Hill, 2006.
Dyfyniad MLAFitzsimmons, Mona J. Service Management. 5th. McGraw-Hill, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.