1. 1. Bureau of Police Research and Development (1983): Ministry of Home Affairs. Govt. of India, III.
2. 2. Cameron, J.M. (1974): Changing Pattern of Violence. Med. Sci. Law. 13(4):264.
3. : An analysis of police killed by criminal action, 1961-63;Cardarell;Jr Crim Law and Criminology 59(3),1968
4. 4. Chandra, J., Dogra, T.D. and Dikshit, P.C. (1986): Comprehensive Study of Homicide in South Delhi.
5. : Homicides an Suspected Homicides in Singapore;Chao;Med Sci Law 13(2),1973