United States. Federal Highway Administration, United States. Bureau of Public Roads, United States. Federal Highway Administration. Offices of Research, Development, and Technology, & United States. Federal Highway Administration. Office of Research and Development. (1918). Public roads. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Federal Highway Administration, United States. Bureau of Public Roads, Development United States. Federal Highway Administration. Offices of Research, and United States. Federal Highway Administration. Office of Research and Development. Public Roads. Washington: U.S. G.P.O., 1918.
MLA (9th ed.) CitationUnited States. Federal Highway Administration, et al. Public Roads. U.S. G.P.O., 1918.
Warning: These citations may not always be 100% accurate.