Cita APA (7th ed.)

U.S. Departament of Transportation. (1980). Safety design and operational practices for streets and highways. U.S. Departament of Transportation.

Cita 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.

Cita MLA (9th ed.)

U.S. Departament of Transportation. Safety Design and Operational Practices for Streets and Highways. U.S. Departament of Transportation, 1980.