APA (7th ed.) Citation

Billingsley, R. (2001). Informers: Policing, policy, practice (1. publ.). Willan.

Chicago Style (17th ed.) Citation

Billingsley, Roger. Informers: Policing, Policy, Practice. 1. publ. Cullompton: Willan, 2001.

MLA (8th ed.) Citation

Billingsley, Roger. Informers: Policing, Policy, Practice. 1. publ. Willan, 2001.

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