1. Chamberlin, E. H. (1950). The theory of monopolistic competition (Sixth Edition, Second Printing). Cambridge: Harvard University Press.
2. Clark, J. B. (1931). The distribution of wealth. New York: Macmillan.
3. Coase, R. H. (1946). The marginal cost controversy. Economica, N.S., 13, 169–182.
4. Darnell, A. C. (1990). The collected economics articles of Harold Hotelling. London: Springer.
5. Dupuit, J. (1844). De la Mesure de l’Utilite des Travaux Publics. Annules des Ponts et Chaussees, 7 (2nd Series). Translated by R. H. Barback (1952) as, On the Measurement of the Utility of Public Works. International Economic Papers, No. 2. London: Macmillan, 83–110. All page references are to the Translation.