Cita APA (7a ed.)

John Dempsey. (2018). An Introduction to Policing, 9th Edition (ninth edition.). Cengage Learning.

Cita Chicago Style (17a ed.)

John Dempsey. An Introduction to Policing, 9th Edition. ninth edition. United States of America: Cengage Learning, 2018.

Cita MLA (8a ed.)

John Dempsey. An Introduction to Policing, 9th Edition. ninth edition. Cengage Learning, 2018.