1. Oxford English Dictionary, www.oed.com.
2. Eigen’s Political & Historical Quotations, http://politicalquotes.org/node/19094, accessed 25 October 2015.
3. New Worlds, scripted by Peter Flannery and Martine Brant, broadcast on Channel 4, April 2014, www.channel4.com/programmes/new-worlds, accessed 18 May 2014.