United States. Federal Highway Administration. (2002). HERS-ST 2.0: Highway Economic Requirements System--State Version : overview. U.S. Dept. of Transportation, Federal Highway Administration.
Chicago Style (17th ed.) CitationUnited States. Federal Highway Administration. HERS-ST 2.0: Highway Economic Requirements System--State Version : Overview. [Washington, D.C.]: U.S. Dept. of Transportation, Federal Highway Administration, 2002.
MLA (9th ed.) CitationUnited States. Federal Highway Administration. HERS-ST 2.0: Highway Economic Requirements System--State Version : Overview. U.S. Dept. of Transportation, Federal Highway Administration, 2002.
Warning: These citations may not always be 100% accurate.