Nelson A. Miles (1992). “Personal Recollections and Observations of General Nelson A. Miles, Embracing a Brief View of the Civil War, Or, From New England to the Golden Gate and the Story of His Indian Campaigns with Comments on the Exploration, Development, and Progress of Our Great Western Empire”, p.341, U of Nebraska Press
"The Ballot or The Bullet (Cleveland Version)". Malcolm X's speech at Cory Methodist Church in Cleveland, Ohio (April 3, 1964) as quoted in "Malcolm X Speaks: Selected Speeches and Statements" edited by George Breitman (pp. 23-44), 1965.
Chogyam Trungpa (2010). “The Collected Works of Chogyam Trungpa: Volume Three: Cutting Through Spiritual Materialism; The Myth of Freedom; The Heart of the Bud dha; Selected Writings”, p.86, Shambhala Publications