1. The mad man as artist: medicine, history and degenerate art;Gilman;J Contemp Hist,1985
2. Art, madness, and human interaction;Vernon;Art J,1972
3. The Art of Bedlam: Richard Dadd. Bethlem Museum of the Mind, London, 7 November 2015–6 February 2016. http://museumofthemind.org.uk/whats-on/exhibition-info/the-art-of-bedlam-richard-dadd (accessed 5 Jan 2016).