Dunning, Eric; Sheard, Kenneth (2005), Barbarians, Gentlemen and Players: A Sociological Study of the Development of Rugby Football (2nd, illustrated, revised ed.), Psychology Press, pp. 105–106, ISBN978-0-7146-5353-2
"No Christian End!". The Journey to Camp: The Origins of American Football to 1769. Professional Football Researchers Association. Archived from the original on 4 April 2007. Retrieved 16 May 2007.
"No Christian End!". The Journey to Camp: The Origins of American Football to 1769. Professional Football Researchers Association. Archived from the original on 4 April 2007. Retrieved 16 May 2007.