Walker, S. (2001). Police accountability: The role of citizen oversight. Wadsworth/Thomson Learning.
Chicago-referens (17:e uppl.)Walker, Samuel. Police Accountability: The Role of Citizen Oversight. Austarlia: Wadsworth/Thomson Learning, 2001.
MLA-referens (9:e uppl.)Walker, Samuel. Police Accountability: The Role of Citizen Oversight. Wadsworth/Thomson Learning, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.