Office of Highway Safety, U. B. o. P. R. (1963). Improvement of the present system of traffic accident records. Traffic Institute, Northwestern University.
芝加哥风格引文Office of Highway Safety, U.S. Bureau of Public Roads. Improvement of the Present System of Traffic Accident Records. Evanston, Ill: Traffic Institute, Northwestern University, 1963.
MLA引文Office of Highway Safety, U.S. Bureau of Public Roads. Improvement of the Present System of Traffic Accident Records. Traffic Institute, Northwestern University, 1963.
警告：这些引文格式不一定是100％准确.