APA (7th ed.) Citation

Hain, P., & Humphry, D. (19). Policing the police. Calder.

Chicago Style (17th ed.) Citation

Hain, Peter, and Derek Humphry. Policing the Police. London: Calder, 19.

MLA (9th ed.) Citation

Hain, Peter, and Derek Humphry. Policing the Police. Calder, 19.