Não informado. THE BRIDGE. National Academy of Engineering.
Lua i Stíl Chicago (17ú heag.)Não informado. THE BRIDGE. Washington: National Academy of Engineering.
Lua MLA (8ú heag.)Não informado. THE BRIDGE. National Academy of Engineering.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.