(1967). Handbook Of Steel Drainage & Highway Constructions Products. American Iron and steel Institute.
Lua i Stíl Chicago (17ú heag.)Handbook Of Steel Drainage & Highway Constructions Products. American Iron and steel Institute, 1967.
Lua MLA (8ú heag.)Handbook Of Steel Drainage & Highway Constructions Products. American Iron and steel Institute, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.