1. Ayres, Clarence E. 1944. The Theory of Economic Progress. Chapel Hill: University of North Carolina Press.
2. Bronowski, Jacob. 1965. Science and Human Values, revised edition. New York: Harper & Row.
3. Bush, Paul D. 1987. The theory of institutional change. Journal of Economic Issues 21 (3): 1075–1116.
4. Bush, Paul D. 1989. The concept of “progressive” institutional change and its implications for economic policy formation. Journal of Economic Issues 23(2): 455–64.
5. Bush, Paul D. 1995. “Marc Tool’s Contributions to Institutional Economics.” In Charles M. A. Clark, ed. Institutional Economics and the Theory of Social Value: Essays in Honor of Marc R. Tool. Boston: Kluwer Academic Publishers.