APA (7th ed.) Citation

Emsley, C. (2006). Police detectives in history, 1750 - 1950. Ashgate.

Chicago Style (17th ed.) Citation

Emsley, Clive. Police Detectives in History, 1750 - 1950. Aldershot [u.a.]: Ashgate, 2006.

MLA (8th ed.) Citation

Emsley, Clive. Police Detectives in History, 1750 - 1950. Ashgate, 2006.

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