Walker, R. (2006). Oxford English for careers Tourism 1. Oxford University Press.
Dyfyniad Arddull ChicagoWalker, Robin. Oxford English for Careers Tourism 1. Oxford University Press, 2006.
Dyfyniad MLAWalker, Robin. Oxford English for Careers Tourism 1. Oxford University Press, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.