Lewis, D. L. (1999). Road user and mitigation costs in highway pavement projects. National Academy Press.
Chicago-referens (17:e uppl.)Lewis, David L. Road User and Mitigation Costs in Highway Pavement Projects. Washington, D.C: National Academy Press, 1999.
MLA-referens (9:e uppl.)Lewis, David L. Road User and Mitigation Costs in Highway Pavement Projects. National Academy Press, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.