(1984). Safety at roadworks in urban areas: Site manual = Veiligheid by padwerke in stedelike gebiede : terreinhandleiding. Dept. of Transport for the National Transport Commission.
Chicago-viite (17. p.)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.
MLA-viite (8. p.)Safety at Roadworks in Urban Areas: Site Manual = Veiligheid by Padwerke in Stedelike Gebiede : Terreinhandleiding. Dept. of Transport for the National Transport Commission, 1984.
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