World Tourism Organization. (2005). Tourism's potential as a sustainable development strategy. World Tourism Organization.
Cita Chicago Style (17a ed.)World Tourism Organization. Tourism's Potential as a Sustainable Development Strategy. Madrid: World Tourism Organization, 2005.
Cita MLA (9a ed.)World Tourism Organization. Tourism's Potential as a Sustainable Development Strategy. World Tourism Organization, 2005.
Precaución: Estas citas no son 100% exactas.