Cita APA (7th ed.)

Pepper, I. K., & Pepper, H. (2009). Keywords in policing. Open University Press.

Cita Chicago (17th ed.)

Pepper, Ian K., i Helen Pepper. Keywords in Policing. Maidenhead, Berkshire, Eng.: Open University Press, 2009.

Cita MLA (9th ed.)

Pepper, Ian K., i Helen Pepper. Keywords in Policing. Open University Press, 2009.