APA (7th ed.) Citation

World Tourism Organization. (1981). Concept and production innovations of the tourism product. The Organization.

Chicago Style (17th ed.) Citation

World Tourism Organization. Concept and Production Innovations of the Tourism Product. Madrid: The Organization, 1981.

MLA (9th ed.) Citation

World Tourism Organization. Concept and Production Innovations of the Tourism Product. The Organization, 1981.

Warning: These citations may not always be 100% accurate.