APA (7th ed.) Citation
Ekelund, R. B., & Hébert, R. F. (1990). <A> History of Economic Theory and Method (3. ed.). MacGraw-Hill.
Chicago Style (17th ed.) Citation
Ekelund, Robert B., and Robert F. Hébert. <A> History of Economic Theory and Method. 3. ed. New York: MacGraw-Hill, 1990.
MLA (9th ed.) Citation
Ekelund, Robert B., and Robert F. Hébert. <A> History of Economic Theory and Method. 3. ed. MacGraw-Hill, 1990.
Warning: These citations may not always be 100% accurate.