Bibliografia
Principal
- A Simple User’s Guide to Certificationfor sustainable Tourism an Ecotourism, CESD.: Bien, A. 2006 null
- Comparação de programas de certificação em Ecoturismo, Évora, Universidade de Évora / ISA (dissertação de mestrado).: Patacho, Mª Madalena 2010 null
- Markets for forest environmental services: reality and potential, Unasylva 219 (55): 53-58.: Katila, M. e Puustjärvi, E. 2004 null
- Urban Ecotourism: A Contradiction in Terms?, Journal of Ecotourism 1 (1): 36-51.: Higham, J. e Lück, M. 2002 null
- Environmental management and the competitiveness of nature-based tourism destinations, Cheltenhan, Edward Elgar Publishing, 172 p: Huybers, Twan e Bennett, Jeff 2002 null
- Typologising nature-based tourists by activity: theoretical and practical implications, Tourism Management 28: 651-660: Mehmetoglu, M. 2007 null
- Rethinking standards form green to sustainable, Annals of Tourism Research 31(4), 986-1007.: Font, Xavier e Harris, Catherine 2004 null