APA (6th ed.):
ProCon.org. (2015, June 23). US Gun Deaths, 1999-2013. Retrieved from https://www.procon.org/us-gun-deaths-1999-2013/
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "US Gun Deaths, 1999-2013," ProCon.org. last modified June 23, 2015. https://www.procon.org/us-gun-deaths-1999-2013/.
MLA (8th ed.):
ProCon.org, "US Gun Deaths, 1999-2013." ProCon.org. 23 June 2015, www.procon.org/us-gun-deaths-1999-2013/
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (8th ed.):
ProCon.org. "US Gun Deaths, 1999-2013." ProCon.org. Last modified on June 23, 2015. Accessed April 13, 2021. https://www.procon.org/us-gun-deaths-1999-2013/