Newsome, David; Kingston, Ross; Moore, Susan A. (2005). Wildlife Tourism. Channel View Publications. p. 345. ISBN978-1-84541-316-3. Archived from the original on 18 August 2020. Retrieved 9 October 2016.
Newsome, David; Kingston, Ross; Moore, Susan A. (2005). Wildlife Tourism. Channel View Publications. p. 345. ISBN978-1-84541-316-3. Archived from the original on 18 August 2020. Retrieved 9 October 2016.
wwt.org.uk
"History of WWT". Wildfowl & Wetland Trust. Archived from the original on 7 September 2016. Retrieved 20 August 2016.