APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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