Main, R. S. (1981). Elements of microeconomics (2nd ed.). West Pub. Co..
Lua i Stíl Chicago (17ú heag.)Main, Robert S. Elements of Microeconomics. 2nd ed. St. Paul: West Pub. Co., 1981.
Lua MLA (9ú heag.)Main, Robert S. Elements of Microeconomics. 2nd ed. West Pub. Co., 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.