Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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