References
- Bushell , R. , and P. Eagles 2007 . Tourism and protected areas: Benefits beyond boundaries . Wallingford : CAB International .
- Butler , R. , and S. Boyd 2000 . Tourism and national parks: Issues and implications . London : Wiley .
- Eagles , P. and McCool , S. 2002 . Tourism in national parks and protected areas: Planning and management , New York : CABI Publishing .
- Eagles , P. , McCool , S. and Haynes , C. 2002 . Sustainable tourism in protected areas: Guidelines for planning and management , Cambridge : IUCN .