Aristotle, (2016). “Aristotle's Politics: Writings from the Complete Works: Politics, Economics, Constitution of Athens”, p.69, Princeton University Press
Jonathan Swift, Thomas Roscoe (1843). “The Works of Jonathan Swift ...: Containing Interesting and Valuable Papers, Not Hitherto Published ... With Memoir of the Author”, p.305
Will Rogers, Bryan B. Sterling, Frances N. Sterling (1993). “Will Rogers' World: America's Foremost Political Humorist Comments on the Twenties and Thirties--and Eighties and Nineties”, p.23, Rowman & Littlefield