Silk, L. (1974). The economists. Avon.
Lua i Stíl Chicago (17ú heag.)Silk, Leonard. The Economists. New York: Avon, 1974.
Lua MLA (9ú heag.)Silk, Leonard. The Economists. Avon, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.