Não informado. (1959). Traffic engineering and control. Printerhall.
Lua i Stíl Chicago (17ú heag.)Não informado. Traffic Engineering and Control. London: Printerhall, 1959.
Lua MLA (8ú heag.)Não informado. Traffic Engineering and Control. Printerhall, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.