Advancing Tourism’s Response to Climate Change

"From Davos to Copenhagen and Beyond: Advancing Tourism’s Response to Climate Change"/UNWTO.(ing.) 
Disponível em:
http://www.unwto.org/climate/index.php
Acesso em: 2 mai.2011
Disponível para download em:
http://www.unwto.org/pdf/From_Davos_to%20Copenhagen_beyond_UNWTOPaper_ElectronicVersion.pdf