Nardo, D. (1994). The U.S. Congress. Lucent Books.
Lua i Stíl Chicago (17ú heag.)Nardo, Don. The U.S. Congress. San Diego, CA, USA: Lucent Books, 1994.
Lua MLA (8ú heag.)Nardo, Don. The U.S. Congress. Lucent Books, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.