Butterfield, H. (1939). Napoleon. Collier Books.
Lua i Stíl Chicago (17ú heag.)Butterfield, Herbert. Napoleon. New York: Collier Books, 1939.
Lua MLA (8ú heag.)Butterfield, Herbert. Napoleon. Collier Books, 1939.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.