Birley, R. (1942). Speeches and documents in American history. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Birley, Robert. Speeches and Documents in American History. London: Oxford University Press, 1942.
Lua MLA (8ú heag.)Birley, Robert. Speeches and Documents in American History. Oxford University Press, 1942.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.