APA (7th ed.) Citation

Bryett, K., & Harrison, A. (1997). An introduction to policing An introduction to policing.

Chicago Style (17th ed.) Citation

Bryett, Keith, and Arch Harrison. "An Introduction to Policing." An Introduction to Policing 1997.

MLA (9th ed.) Citation

Bryett, Keith, and Arch Harrison. "An Introduction to Policing." An Introduction to Policing, 1997.

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