1. Adams, Douglas. 1979. The Hitchhiker’s Guide to the Galaxy. London: Pan.
2. Adams, Douglas, and Mark Carwardine. 2009. Last Chance to See. London: Arrow.
3. Carwardine, Mark. Last Chance to See. https://www.markcarwardine.com/last-chance-to-see.html. Accessed 11 Oct 2019.
4. Heise, Ursula. 2016a. Imagining Extinction: The Cultural Meanings of Endangered Species. Chicago: Chicago University Press.
5. History of the Convention. Convention on Biological Diversity. http://www.cbd.int/history/. Accessed 12 Aug 2014.