Soule, G. (1955). Ideas of the Great Economists (1. Aufl.). Mentor Books.
Lua i Stíl Chicago (17ú heag.)Soule, George. Ideas of the Great Economists. 1. Aufl. New York: Mentor Books, 1955.
Lua MLA (8ú heag.)Soule, George. Ideas of the Great Economists. 1. Aufl. Mentor Books, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.