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Dyfyniad Arddull ChicagoAgung, Yuliana. Yes! I Can Serve: Handbook for Service Excellence. Publishing One, 2012.
Dyfyniad MLAAgung, Yuliana. Yes! I Can Serve: Handbook for Service Excellence. Publishing One, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.