Finkelman. Congress and the Crisis of the 1850s. Ohio University Press.
Lua i Stíl Chicago (17ú heag.)Finkelman. Congress and the Crisis of the 1850s. Ohio University Press.
Lua MLA (9ú heag.)Finkelman. Congress and the Crisis of the 1850s. Ohio University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.