Zimring, F. E. (1991). The scale of imprisonment. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Zimring, Franklin E. The Scale of Imprisonment. Chicago: University of Chicago Press, 1991.
Lua MLA (9ú heag.)Zimring, Franklin E. The Scale of Imprisonment. University of Chicago Press, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.