Zimring, F. E., & Hawkins, G. (1997). Crime is not the problem: Lethal violence in America. Oxford University Press.
Chicago Style (17th ed.) ZitazioaZimring, Franklin E., eta Gordon Hawkins. Crime Is Not the Problem: Lethal Violence in America. New York: Oxford University Press, 1997.
MLA (9th ed.) ZitazioaZimring, Franklin E., eta Gordon Hawkins. Crime Is Not the Problem: Lethal Violence in America. Oxford University Press, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.