(1987). The travel and tourism industry. Oxford: Pergamon Press.
Dyfyniad Arddull ChicagoThe Travel and Tourism Industry. Oxford: Pergamon Press, 1987.
Dyfyniad MLAThe Travel and Tourism Industry. Oxford: Pergamon Press, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.