1. Bell, D. J. (1981). Collective bargaining: Perspective for the 1980s.Journal of Police Science and Administration, 9, 296–305.
2. Benecki, S. (1978). Municipal expenditure levels and collective bargaining.Industrial Relations, 17, 216–230.
3. Bennett, W., & Hess, K. M. (2001).Management and supervision in law enforcement. Belmont, CA: Waldsworth Thompson.
4. Burpo, J. (1971). The police labor movement: Problems and perspectives. Springfield: Charles Thomas.
5. Carroll, R. J. (2000).Desk reference on the economy. Washington D.C.: CQ Press.