1. Political Order and Economic Development: Reflections on Adam Smith's Wealth of Nations
2. Billet, L. “The Role of Government in a Just Economy: The Wealth of Nations Reconsidered,” (unpublished), Adam Smith Bicentennial Lecture Series, Ohio University, Athens, Ohio, May 26, 1976.
3. Buckle, H. T. 1883.History of Civilization in EnglandVol. II, 340–360. New York