"Sophie Hannah: 'I love being thought of firmly as a crime writer. I'm snobby about books that aren't crime fiction'". Interview with Alison Flood, www.theguardian.com. September 19, 2014.
John Adams, Charles Francis Adams (1851). “The Works of John Adams, Second President of the United States: With a Life of the Author, Notes and Illustrations”, p.422
"The Ballot or The Bullet (Detroit Version)". Malcolm X's speech at a meeting sponsored by the Congress for Racial Equality in Detroit, Michigan, April 12, 1964.