APA (6th ed.):
ProCon.org. (2010, September 27). UPDATED: Historical Timeline – Death Penalty. Retrieved from https://www.procon.org/updated-historical-timeline-death-penalty/
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "UPDATED: Historical Timeline – Death Penalty," ProCon.org. last modified September 27, 2010. https://www.procon.org/updated-historical-timeline-death-penalty/.
MLA (8th ed.):
ProCon.org, "UPDATED: Historical Timeline – Death Penalty." ProCon.org. 27 Sep. 2010, www.procon.org/updated-historical-timeline-death-penalty/
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (8th ed.):
ProCon.org. "UPDATED: Historical Timeline – Death Penalty." ProCon.org. Last modified on September 27, 2010. Accessed January 15, 2021. https://www.procon.org/updated-historical-timeline-death-penalty/