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Dyfyniad Arddull ChicagoGunn, Clare A. Tourism Planning: Basics, Concepts, Cases/3e. 3rd ed. London: Taylor and Francis, 1994.
Dyfyniad MLAGunn, Clare A. Tourism Planning: Basics, Concepts, Cases/3e. 3rd ed. Taylor and Francis, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.