Garber Nicholas J., H. (2015). Traffic & Highway Engineering (1st.). Cengage Publication.
Lua i Stíl Chicago (17ú heag.)Garber Nicholas J., Hoel. Traffic & Highway Engineering. 1st. New Delhi: Cengage Publication, 2015.
Lua MLA (9ú heag.)Garber Nicholas J., Hoel. Traffic & Highway Engineering. 1st. Cengage Publication, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.