1. Bauer, J. and Giles, J. 2001 Wildlife Tourism Research Report No. 13 [R]. Gold Coast, Queensland: CRC for Sustainable Tourism.
2. Wildlife Tourism Research Report Series;A. Britles,2001
3. Conway, W. 1995. Wild and zoo animal interactive management and habitat conservation [J]. Biodiversity and Conservation,4: 573–594.
4. Dong Jun. 2004. Research on western China ecological status [J]. Journal of Ecological Economy, (138): 16–25.
5. Gray, W. 2004. Walking Africa [J]. Mankind and Nature32: 18–39