| 1. | Tourism 2020 vision : Africa / World Tourism OrganizationData Publicação: 2000 Col.autor: World Tourism Organization COTA(S): 8341-I |  | |
| 2. | Air Connectivity and its Impact on Tourism in Asia and the Pacific / World Tourism Organization (UNWTO)Data Publicação: 2014 Col.autor: World Tourism Organization COTA(S): 16324; 16324-Dg | | |
| 3. | Responding to Climate Change – Tourism Initiatives in Asia and the Pacific / World Tourism Organization (UNWTO)Data Publicação: 2014 Col.autor: World Tourism Organization COTA(S): 16327; 16327-Dg | | |
| 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 COTA(S): 16330-Dg | | |