1.		Budgets & marketing plans of National tourism administrations / World Tourism Organization Data Publicação: 1995 Col.autor: World Tourism Organization
2.		Making tourism more sustainable : A guide for policy makers / United Nations Environment Programme, World Tourism Organization Data Publicação: 2005 Col.autor: United Nations Environment Programme World Tourism Organization
3.		Air Connectivity and its Impact on Tourism in Asia and the Pacific / World Tourism Organization (UNWTO) Data Publicação: 2014 Col.autor: World Tourism Organization
4.		Towards Measuring the Economic Value of Wildlife Watching Tourism in Africa – Briefing Paper / World Tourism Organization (UNWTO) Data Publicação: 2015 Col.autor: World Tourism Organization