1.		Compendium of Best Practices and Recommendations for Ecotourism in Asia and the Pacific / World Tourism Organization Col.autor: OMT COTA(S): 13893; 13893-Dg
2.		Tourism and intangible cultural heritage / World Tourism Organization Data Publicação: 2012 Col.autor: OMT COTA(S): 14235-Dg
3.		Tourism in the green economy / UNWTO Data Publicação: 2012 Col.autor: OMT COTA(S): 14237; 14237-Dg