Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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