APA (7th ed.) Citation

Ekelund, R. B., & Ekelund, R. B. (1975). A history of economic theory and method. McGraw-Hill.

Chicago Style (17th ed.) Citation

Ekelund, Robert Burton, and Robert B.;Herbert Ekelund. A History of Economic Theory and Method. McGraw-Hill, 1975.

MLA (9th ed.) Citation

Ekelund, Robert Burton, and Robert B.;Herbert Ekelund. A History of Economic Theory and Method. McGraw-Hill, 1975.