5 Sources for my topic: 

http://www.deathpenaltyinfo.org

http://www.usnews.com/opinion/articles/2013/10/03/the-debate-over-the-death-penalty-hasnt-changed-in-decades

http://deathpenalty.procon.org/view.resource.php?resourceID=002000

http://www.deathpenalty.org/section.php?id=24

http://www.prodeathpenalty.com