Beard, C. A., & Beard, M. R. (1944). A basic history of the United States. New Home Library.
Lua i Stíl Chicago (17ú heag.)Beard, Charles A., agus Mary Ritter Beard. A Basic History of the United States. New York: New Home Library, 1944.
Lua MLA (8ú heag.)Beard, Charles A., agus Mary Ritter Beard. A Basic History of the United States. New Home Library, 1944.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.