Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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