APA (7th ed.) Citation

United States. Federal Highway Administration. (1977). Traveled-way traffic map, 1977. Dept. of Transportation, Federal Highway Administration.

Chicago Style (17th ed.) Citation

United States. Federal Highway Administration. Traveled-way Traffic Map, 1977. Washington: Dept. of Transportation, Federal Highway Administration, 1977.

MLA (9th ed.) Citation

United States. Federal Highway Administration. Traveled-way Traffic Map, 1977. Dept. of Transportation, Federal Highway Administration, 1977.