United States. President (1901-1909 : Roosevelt), Theodore Roosevelt (1906). “Message of the President of the United States Communicated to the Two Houses of Congress at the Beginning of the Second Session of the Fifty-ninth Congress”
David J. Lieberman (2010). “Find Out Who's Normal and Who's Not: The Proven System to Quickly Assess Anyone's Emotional Stability”, p.55, David Lieberman