APA (7th ed.) Citation

Ekelund, R. B., & Hebert, R. F. (1990). A history of economic theory and method (3rd ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Ekelund, Robert B., and Robert F. Hebert. A History of Economic Theory and Method. 3rd ed. New York: McGraw-Hill, 1990.

MLA (9th ed.) Citation

Ekelund, Robert B., and Robert F. Hebert. A History of Economic Theory and Method. 3rd ed. McGraw-Hill, 1990.