United States. Bureau of Public Roads, United States. Office of Public Roads and Rural Engineering, United States. Public Roads Administration, United States. Federal Highway Administration, United States. Federal Highway Administration. Offices of Research and Development, United States. Federal Highway Administration. Offices of Research, Development, and Technology, . . . Turner-Fairbank Highway Research Center. (1998). Public roads. Office of Research and Development, Federal Highway Administration.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. Bureau of Public Roads, United States. Office of Public Roads and Rural Engineering, United States. Public Roads Administration, United States. Federal Highway Administration, United States. Federal Highway Administration. Offices of Research and Development, Development United States. Federal Highway Administration. Offices of Research, United States. Federal Highway Administration. Office of Research and Development, Development United States. Federal Highway Administration. Office of Research, و Turner-Fairbank Highway Research Center. Public Roads. Washington, D.C.: Office of Research and Development, Federal Highway Administration, 1998.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)United States. Bureau of Public Roads, et al. Public Roads. Office of Research and Development, Federal Highway Administration, 1998.