Guide for local authorities on developing sustainable tourism / World Tourism Organization
Steps to success : global good practices in travel & tourism human resource development / World Travel & Tourism Council, World Travel & Tourism Human Resource Centre
As férias ecológicas / Manuela Alves, il. de André Letria
Guide à l'intention des autorités locales: développement durable du tourisme / Organisation Mondiale du Tourisme
Ecotourists and indigenous hosts: diverning views on their relationship with nature / Thomas Hinch