U.S. Departament of Transportation. (1980). Safety design and operational practices for streets and highways. U.S. Departament of Transportation.
Citace podle Chicago (17th ed.)U.S. Departament of Transportation. Safety Design and Operational Practices for Streets and Highways. Washington, D.C: U.S. Departament of Transportation, 1980.
Citace podle MLA (9th ed.)U.S. Departament of Transportation. Safety Design and Operational Practices for Streets and Highways. U.S. Departament of Transportation, 1980.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..