APA (7th ed.) Zitazioa

Main, R. S. (1981). Elements of microeconomics (2nd ed.). West Pub. Co..

Chicago Style (17th ed.) Zitazioa

Main, Robert S. Elements of Microeconomics. 2nd ed. St. Paul: West Pub. Co., 1981.

MLA (9th ed.) Zitazioa

Main, Robert S. Elements of Microeconomics. 2nd ed. West Pub. Co., 1981.