1. American Psychiatric Association (1999). Diagnostic and statistical manual of mental disorders (DSM-IV). Washington, DC: American Psychiatric Association.
2. Influence of punishment, emotional rejection, child abuse, and broken home on aggression in adolescent;Barnow;Psychopathology,2001
3. Reactive and proactive aggression;Brendgen;Journal of Abnormal Child Psychology,2001
4. British Broadcasting Corporation (2002). Youngsters targeted by digital bullies. Available on the World Wide Web from: http://news.bbc.co.uk/hi/english/uk/newsid_1929000/1929944.stm
5. Internet safety for schools, teachers, and parents;Dorman;Journal of School Health,1997