Hoel, L. A. (2011). Transportation infrastructure engineering: A multimodal integration S1 ed. Cengage Learning.
Chicago-referens (17:e uppl.)Hoel, Lester A. Transportation Infrastructure Engineering: A Multimodal Integration S1 Ed. Cengage Learning, 2011.
MLA-referens (8:e uppl.)Hoel, Lester A. Transportation Infrastructure Engineering: A Multimodal Integration S1 Ed. Cengage Learning, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.