Gerschenkron, A. (1962). Economic backwardnessin historical perspective, a book of essays. Praeger.
Lua i Stíl Chicago (17ú heag.)Gerschenkron, Alexander. Economic Backwardnessin Historical Perspective, a Book of Essays. New York: Praeger, 1962.
Lua MLA (9ú heag.)Gerschenkron, Alexander. Economic Backwardnessin Historical Perspective, a Book of Essays. Praeger, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.