APA引文

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引文

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

警告：這些引文格式不一定是100％准確.