Ullman, G. L., Dudek, C. L., & Allen, C. J. (1988). Delineation of concrete safety-shaped barriers. Texas Transportation Institute, Texas A&M University System ; Available from the National Technical Information Service.
Chicago Style (17th ed.) CitationUllman, Gerald L., Conrad L. Dudek, and Carlton J. Allen. Delineation of Concrete Safety-shaped Barriers. College Station, Tex. : Springfield, Va.: Texas Transportation Institute, Texas A&M University System ; Available from the National Technical Information Service, 1988.
MLA (9th ed.) CitationUllman, Gerald L., et al. Delineation of Concrete Safety-shaped Barriers. Texas Transportation Institute, Texas A&M University System ; Available from the National Technical Information Service, 1988.
Warning: These citations may not always be 100% accurate.