Silk, L. S. (1976). The economists. Basic Books.
Lua i Stíl Chicago (17ú heag.)Silk, Leonard Solomon. The Economists. New York: Basic Books, 1976.
Lua MLA (8ú heag.)Silk, Leonard Solomon. The Economists. Basic Books, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.