Cita APA (7a ed.)

United Nations Environment Programme. (2005). Making Tourism more Sustainable: A guide for Policy Makers. World Tourism Organization.

Cita Chicago Style (17a ed.)

United Nations Environment Programme. Making Tourism More Sustainable: A Guide for Policy Makers. Madrid: World Tourism Organization, 2005.

Cita MLA (9a ed.)

United Nations Environment Programme. Making Tourism More Sustainable: A Guide for Policy Makers. World Tourism Organization, 2005.