1. Hayek, Friedrich A (1935). Prices and Production. Second Edition. New York: Augustus M. Kelly.
2. Menger, Carl (1994 [1871]). Principles of Economics. Translated by James Dingwall and Bert F. Hoselitz. Grove City, PA: Libertarian Press, Inc.
3. Mises, Ludwig von (1966). Human Action: A Treatise on Economics. Third Revised Edition. Chicago: Contemporary Books, Inc.
4. Peikoff, Leonard (1991). Objectivism: The Philosophy of Ayn Rand. New York: Meridian.
5. Rand, Ayn (1967). Capitalism: The Unknown Ideal. New York: Signet.