1. Azkárate, E., Zaratiegui, A., & Leranoz, E. (1996). Cuéllar: Inventario de recursos turisticos (Unpublished consulting report).
2. Interconections, planning and the local-global nexus;Burns,2001
3. Paradox in planning. Tourism elitism or brutalism;Burns;Annals of Tourism Research,1999
4. Tourism, a new perspective;Burns,1995
5. Sustainable tourism—looking backwards in order to progress?;Butler,1998