APA ציטוט

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.

ציטוט MLA

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