(1984). Safety at roadworks in urban areas: Site manual = Veiligheid by padwerke in stedelike gebiede : terreinhandleiding. Dept. of Transport for the National Transport Commission.
Lua i Stíl Chicago (17ú heag.)Safety at Roadworks in Urban Areas: Site Manual = Veiligheid by Padwerke in Stedelike Gebiede : Terreinhandleiding. Pretoria: Dept. of Transport for the National Transport Commission, 1984.
Lua MLA (8ú heag.)Safety at Roadworks in Urban Areas: Site Manual = Veiligheid by Padwerke in Stedelike Gebiede : Terreinhandleiding. Dept. of Transport for the National Transport Commission, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.