Não informado. (2001). Bibliography. National Research Council, Highway Research Board.
Lua i Stíl Chicago (17ú heag.)Não informado. Bibliography. Washington: National Research Council, Highway Research Board, 2001.
Lua MLA (8ú heag.)Não informado. Bibliography. National Research Council, Highway Research Board, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.