Northwestern University, Evanston, Ill. Traffic Institute, & National Safety Council. Traffic Accident Data Project Steering Committee. (1970). Exercises in classifying motor vehicle trafficway accidents: Designed for training in use of Manual on classification of motor vehicle traffic accidents, second revision, American National Standard D16.1-1970. National Safety Council.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Northwestern University, Evanston, Ill. Traffic Institute, và National Safety Council. Traffic Accident Data Project Steering Committee. Exercises in Classifying Motor Vehicle Trafficway Accidents: Designed for Training in Use of Manual on Classification of Motor Vehicle Traffic Accidents, Second Revision, American National Standard D16.1-1970. Chicago, Ill.: National Safety Council, 1970.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Northwestern University, Evanston, Ill. Traffic Institute, và National Safety Council. Traffic Accident Data Project Steering Committee. Exercises in Classifying Motor Vehicle Trafficway Accidents: Designed for Training in Use of Manual on Classification of Motor Vehicle Traffic Accidents, Second Revision, American National Standard D16.1-1970. National Safety Council, 1970.