25.		Tourism and biodiversity - achieving common goals towards sustainability / World Tourism Organization Data Publicação: 2010 Col.autor: OMT COTA(S): 12583; 12583-Dg
26.		Compendium of Best Practices and Recommendations for Ecotourism in Asia and the Pacific / World Tourism Organization Col.autor: OMT COTA(S): 13893; 13893-Dg
27.		Tourism in the green economy / UNWTO Data Publicação: 2012 Col.autor: OMT COTA(S): 14237; 14237-Dg
28.		UNWTO High-Level Regional Conferenv«ce on green tourism : Final report / UNWTO Data Publicação: 2013 Col.autor: OMT COTA(S): 14897