1. . Tourism, fossil fuel consumption and the impact on global change. In Tourism Recreation and Social Change, (eds). Landcare Research: Lincoln, New Zealand; 192–206.
2. , . 2004. Tourism mobility and global communities. In Global Tourism, (ed.). Heinemann: Oxford; 463–481.
3. Spatial and temporal patterns of tourist behaviour
4. 1988. Activity Spaces in New Environments. Unpublished doctoral thesis, University of Georgia.