1. G. Aranoff(1986 ). Appendix: The Economics of Product Pricing, in Ralph S. Polimeni, Frank J. Fabozzi, and Arthur H. Adelberg's Cost Accounting Concepts and Applications for Managerial Decision Making, second edition, McGraw-Hill, pp. 587-593, 626.
2. J. M. Clark(1923 ). Studies in the Economics of Overhead Costs, The University of Chicago Press, Chicago.
3. J. M. Clark(1940 ). Toward a Concept of Workable Competition, American Economic Review, June 1940pp. 241 -256 .
4. J. M. Clark(1961 ). Competition as a Dynamic Process, The Brookings Institution, Washington, D.C.