Currin, T. R. (2001). Introduction to traffic engineering. Thomson.
Lua i Stíl Chicago (17ú heag.)Currin, Thomas R. Introduction to Traffic Engineering. Thomson, 2001.
Lua MLA (8ú heag.)Currin, Thomas R. Introduction to Traffic Engineering. Thomson, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.