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Dyfyniad Arddull ChicagoJates, Christopher St.j. Check In: A Course for Hotel Reception Staff. London: Cassell, 1991.
Dyfyniad MLAJates, Christopher St.j. Check In: A Course for Hotel Reception Staff. London: Cassell, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.