Thomas Yellowtail, Michael Oren Fitzgerald (1994). “Yellowtail, Crow Medicine Man and Sun Dance Chief: An Autobiography”, p.179, University of Oklahoma Press
Henry Kirke White (1824). “The prose remains of Henry Kirke White, of Nottingham, late of St. John's College, Cambridge, containing his letters, essays, and some account of his life”, p.117
Arthur Penrhyn Stanley (1863). “Sermons Preached Before His Royal Highness the Prince of Wales: During His Tour in the East in the Spring of 1862 with Notices of Some of the Localities Visited”, p.95
Ernst Rohm's address to Kurt Ludecke (January 1934), as quoted in H. Paul Jeffers "History's Greatest Conspiracies: One Hundred Plots, Real and Suspected, That have Shocked, Fascinated, and Sometimes Changed the World", August 1, 2004.