EKELUND, R. B., & HEBERT, R. F. (2002). A history of economic theory and method.-- ed.4. McGraw-Hill.

EKELUND, Robert B., and Robert F. HEBERT. A History of Economic Theory and Method.-- Ed.4. New York: McGraw-Hill, 2002.

EKELUND, Robert B., and Robert F. HEBERT. A History of Economic Theory and Method.-- Ed.4. McGraw-Hill, 2002.