Roy Jorgensen and Associates, Westat Research Analysts, Inc, & United States. Bureau of Public Roads. (1966). Evaluation of criteria for safety improvements on the highways: A report to the United States Department of Commerce, Bureau of Public Roads, Office of Highway Safety. Jorgensen.
Chicago-viite (17. p.)Roy Jorgensen and Associates, Inc Westat Research Analysts, ja United States. Bureau of Public Roads. Evaluation of Criteria for Safety Improvements on the Highways: A Report to the United States Department of Commerce, Bureau of Public Roads, Office of Highway Safety. [Gaithersburg, Md.: Jorgensen, 1966.
MLA-viite (8. p.)Roy Jorgensen and Associates, et al. Evaluation of Criteria for Safety Improvements on the Highways: A Report to the United States Department of Commerce, Bureau of Public Roads, Office of Highway Safety. Jorgensen, 1966.