Urban adaptation to climate change in Europe : Challenges and opportunities for cities together with supportive national and European policies / European Environment Agency
Responsible tourism: concepts, theory and practice / David Leslie
Challenges and opportunities for tourism development in small Island developing states / World Tourism Organization (UNWTO)
Plano de gestão das Bacias Hidrográficas dos rios Vouga, Mondego e Lis : Cenérios prospectivos - Sector do Turismo; João Feijó Delgado