Cita APA (7a ed.)

Progressive Foundation & Day, S. H. (1989). Prisoners on purpose: A peacemakers' guide to jails and prisons.

Cita Chicago Style (17a ed.)

Progressive Foundation y Samuel H. Day. Prisoners on Purpose: A Peacemakers' Guide to Jails and Prisons. Madison, Wis. [u.a.], 1989.

Cita MLA (8a ed.)

Progressive Foundation y Samuel H. Day. Prisoners on Purpose: A Peacemakers' Guide to Jails and Prisons. 1989.