APA (7th ed.) Citation

World Tourism Organization. (1983). Development of a system of statistical indicators for travel and tourism. The Organization.

Chicago Style (17th ed.) Citation

World Tourism Organization. Development of a System of Statistical Indicators for Travel and Tourism. Madrid: The Organization, 1983.

MLA (9th ed.) Citation

World Tourism Organization. Development of a System of Statistical Indicators for Travel and Tourism. The Organization, 1983.

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