World Tourism Organization. (1981). Concept and production innovations of the tourism product. The Organization.
Chicago Style (17th ed.) CitationWorld Tourism Organization. Concept and Production Innovations of the Tourism Product. Madrid: The Organization, 1981.
MLA (9th ed.) CitationWorld Tourism Organization. Concept and Production Innovations of the Tourism Product. The Organization, 1981.
Warning: These citations may not always be 100% accurate.