Não informado. (1977). Transportation Engineering. Institute of Transportation Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Transportation Engineering. Arlington, Va: Institute of Transportation Engineers, 1977.
Lua MLA (8ú heag.)Não informado. Transportation Engineering. Institute of Transportation Engineers, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.