Theodore Roosevelt (1975). “The Autobiography of Theodore Roosevelt: Condensed from the Original Ed., Supplemented by Letters, Speeches, and Other Writings, and Edited with an Introd. by Wayne Andrews”, Octagon Press, Limited
Theodore Roosevelt (2015). “Theodore Roosevelt on Bravery: Lessons from the Most Courageous Leader of the Twentieth Century”, p.42, Skyhorse Publishing, Inc.
Theodore Roosevelt (2015). “Theodore Roosevelt on Bravery: Lessons from the Most Courageous Leader of the Twentieth Century”, p.75, Skyhorse Publishing, Inc.
"Becoming a Great School: Harnessing the Powers of Quality Management and Collaborative Leadership". Book by Dr. Kenneth B. Cooper, Nels Gustafson and Joseph G. Salah (p. 9), December 24, 2013.