| 1. | Compendium of Best Practices and Recommendations for Ecotourism in Asia and the Pacific / World Tourism OrganizationCol.autor: OMT |  | |
| 2. | Tourism and intangible cultural heritage / World Tourism OrganizationData Publicação: 2012 Col.autor: OMT | | |
| 3. | Tourism in the green economy / UNWTOData Publicação: 2012 Col.autor: OMT | | |