Case, Harry W., Reiter, Ismar, Feblowicz, Ernst A., and Stewart, Roger G. "The Habitual Traffic Violator." Highway Research Board Bulletin No. 120, 1956.
2.
Case, Harry W. and Stewart, Roger G. "Driving Attitudes." Traffic Quarterly, X ( 1956), 364-376.
3.
Edwards, Allen L.Experimental Design in Psychological Research. New York: Rinehart Company, Inc., Publishers, 1942.
4.
Eno Foundation for Highway Traffic Control.Personal Characteristics of Traffic Accident Repeaters. Saugatuck, Connecticut, 1948.
5.
Lawshe, C. H., Jr. " Studies in Automobile Speed on the Highway. III. Some Driver Opinions and their Relationship to Speed on the Open Highway." Journal of Applied Psychology , XXIV ( 1940), 318-324.
6.
Lefeve, B. A. "Relation of Accidents to Speed Habits and other Driver Characteristics." Highway Research Board Bulletin No. 120, 1956.