Thomas Paine (2017). “Common Sense & The Rights of Man - The Voice of the American Revolution: Words of a Visionary That Sparked the Revolution and Remained the Core of American Democratic Principles”, p.4, Madison & Adams Press
Henry David Thoreau (2014). “Citizen Thoreau: Walden, Civil Disobedience, Life Without Principle, Slavery in Massachusetts, A Plea for Captain John Brown”, p.197, Graphic Arts Books