APA (7th ed.) Citation

Pope, D. W., & Weiner, N. L. (1981). Modern policing. Croom Helm.

Chicago Style (17th ed.) Citation

Pope, David W., and Norman L. Weiner. Modern Policing. London: Croom Helm, 1981.

MLA (8th ed.) Citation

Pope, David W., and Norman L. Weiner. Modern Policing. Croom Helm, 1981.