1. Tourisme, culture et développement durable;Robinson,2006
2. Le tourisme face a la menace de la folklorisation des cultures;Michel,2006
3. Ecotourism and sustainable development: Who owns paradise ?;Honey,1999
4. Sustainable tourism management;Swarbrooke,1999
5. Decline of Urban Ecosystem of Mzab Valley;Bouchair;Building and Environment,2004