"The Ballot or The Bullet". 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.
John Gillies, George Whitefield (1853). “Memoirs of the Rev. George Whitefield: To which is Appended an Extensive Collection of His Sermons and Other Writings”, p.243