The President's Commission on Law Enforcement and Administration of Justice. Task Force Report: The Police. Washington: Government Printing Office, (1967).
2.
SheehanRobertCordnerGary. Introduction To Police Administration. Cincinnati: Anderson, (1989).
3.
SkolnickJerome H.BayleyDavid H.New Blue Line. New York: The Free Press, (1986).
4.
SykesRichard E.BrentEdward E.Policing: A Social Behavioral Perspective. New Brunswick: Rutgers University Press, (1983).