APA

U.S. Department of Transportation. Federal Highway Adm. Technology sharing report nr 77-203, . (1977). Traffic controls in construction and maintenance work zones. Washington DC: U.S. Department of Transportation. Federal Highway Adm. Technology sharing report nr 77-203.

Chicago

U.S. Department of Transportation. Federal Highway Adm. Technology sharing report nr 77-203, . 1977. Traffic controls in construction and maintenance work zones. Washington DC: U.S. Department of Transportation. Federal Highway Adm. Technology sharing report nr 77-203.

Harvard

U.S. Department of Transportation. Federal Highway Adm. Technology sharing report nr 77-203, . (1977). Traffic controls in construction and maintenance work zones. Washington DC: U.S. Department of Transportation. Federal Highway Adm. Technology sharing report nr 77-203.

MLA

U.S. Department of Transportation. Federal Highway Adm. Technology sharing report nr 77-203, . Traffic controls in construction and maintenance work zones. Washington DC: U.S. Department of Transportation. Federal Highway Adm. Technology sharing report nr 77-203. 1977.