World Tourism Organization. (2000). Sustainable development of tourism: A compilation of good practices = Desarrollo sostenible del turismo : una compilacion de buenas practicas = Developpment durable du tourisme : une compilation de bonnes pratiques. World Tourism Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Tourism Organization. Sustainable Development of Tourism: A Compilation of Good Practices = Desarrollo Sostenible Del Turismo : Una Compilacion De Buenas Practicas = Developpment Durable Du Tourisme : Une Compilation De Bonnes Pratiques. [Madrid]: World Tourism Organization, 2000.
Παραπομπή σε μορφή MLA (8th εκδ.)World Tourism Organization. Sustainable Development of Tourism: A Compilation of Good Practices = Desarrollo Sostenible Del Turismo : Una Compilacion De Buenas Practicas = Developpment Durable Du Tourisme : Une Compilation De Bonnes Pratiques. World Tourism Organization, 2000.
