Brener, Nancy D., Thomas R. Simon, Etienne G. Krug, and Richard Lowry.1999. Recent Trends in Violence-Related Behaviors Among High School Students in the United States. Journal of the American Medical Association282:440-46.
2.
U.S. Department of Justice. Office of Justice Programs. Bureau of Justice Statistics.1998. School Crime Supplement to the National Crime Victimization Survey, 1989 and 1995. Washington, DC: Department of Justice, Office of Justice Programs.
