APA (7th ed.) Citation

Critchley, T. A. (1967). A history of police in England and Wales, 900-1966 / T. A. Critchley. Constable.

Chicago Style (17th ed.) Citation

Critchley, T. A. A History of Police in England and Wales, 900-1966 / T. A. Critchley. London: Constable, 1967.

MLA (9th ed.) Citation

Critchley, T. A. A History of Police in England and Wales, 900-1966 / T. A. Critchley. Constable, 1967.

Warning: These citations may not always be 100% accurate.