APA (6th ed.):
ProCon.org. (2013, September 12). Historical Timeline: Electronic Voting Machines and Related Voting Technology. Retrieved from https://www.procon.org/historical-timeline-electronic-voting-machines-and-related-voting-technology/
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "Historical Timeline: Electronic Voting Machines and Related Voting Technology," ProCon.org. last modified September 12, 2013. https://www.procon.org/historical-timeline-electronic-voting-machines-and-related-voting-technology/.
MLA (8th ed.):
ProCon.org, "Historical Timeline: Electronic Voting Machines and Related Voting Technology." ProCon.org. 12 Sep. 2013, www.procon.org/historical-timeline-electronic-voting-machines-and-related-voting-technology/
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (8th ed.):
ProCon.org. "Historical Timeline: Electronic Voting Machines and Related Voting Technology." ProCon.org. Last modified on September 12, 2013. Accessed April 20, 2021. https://www.procon.org/historical-timeline-electronic-voting-machines-and-related-voting-technology/