http://www.criminaljusticedegreehub.com/top-10-most-violent-prisons-in-the-world/
http://www.bestmastersincounseling.com/posts/10-most-brutal-prisons-in-the-world/
http://whatculture.com/offbeat/10-brutal-prisons-world.php/4
http://www.toptenz.net/top-10-deadliest-prisons-world.php
http://au.askmen.com/top_10/entertainment/top-10-notorious-prisons_6.html
http://www.takepart.com/photos/worst-prisons-locked-up/louisiana-state-penitentiary-louisiana-united-states
http://www.clicktop10.com/2013/04/top-10-worst-prisons-in-the-world/
http://kickassfacts.com/20-worst-prisons-on-earth/