"Exclusive: Screenwriters John Francis Daley and Jonathan M. Goldstein Talk HORRIBLE BOSSES, BURT WONDERSTONE, OF ALL THE THINGS, VACATION Reboot, and More". Interview with Christina Radish, collider.com. July 8, 2011.
Winston Churchill's addree as Home Secretary to Prime Minister Asquith on compulsory sterilization of 'the feeble-minded and insane', as quoted in "'Race', Sport and British Society" edited by Ben Carrington and Ian Mcdonald, 2001.