Divine, R. A. (1957). American Immigration Policy, 1924-1952. Yale University Press.
Lua i Stíl Chicago (17ú heag.)Divine, Robert A. American Immigration Policy, 1924-1952. New Haven: Yale University Press, 1957.
Lua MLA (8ú heag.)Divine, Robert A. American Immigration Policy, 1924-1952. Yale University Press, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.