APA (7th ed.) Citation

Dempsey, J. S. (2019). An introduction to policing (Ninth edition.). Cengage.

Chicago Style (17th ed.) Citation

Dempsey, John S. An Introduction to Policing. Ninth edition. Australia: Cengage, 2019.

MLA (9th ed.) Citation

Dempsey, John S. An Introduction to Policing. Ninth edition. Cengage, 2019.

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