1. World Tourism Organisation (UNWTO). UNWTO Tourism Highlights, 2014 Edition 2014 [23/12/2014]. Available: http://mkt.unwto.org/publication/unwto-tourism-highlights-2014-edition.
2. Wildlife tourism: impacts, management and planning;K Higginbottom,2004
3. Towards a conceptual framework for wildlife tourism;PC Reynolds;Tourism Management,2001
4. Tourists' support for conservation messages and sustainable management practices in wildlife tourism experiences;R Ballantyne;Tourism Management,2009
5. Protected Area Economics and Policy: Linking Conservation and Sustainable Development.;FL Filion,1994