APA (6th ed.):
ProCon.org. (2013, August 16). Historical Timeline: A History of the ACLU from 1915 to Present. Retrieved from https://www.procon.org/historical-timeline-a-history-of-the-aclu-from-1915-to-present/
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "Historical Timeline: A History of the ACLU from 1915 to Present," ProCon.org. last modified August 16, 2013. https://www.procon.org/historical-timeline-a-history-of-the-aclu-from-1915-to-present/.
MLA (8th ed.):
ProCon.org, "Historical Timeline: A History of the ACLU from 1915 to Present." ProCon.org. 16 Aug. 2013, www.procon.org/historical-timeline-a-history-of-the-aclu-from-1915-to-present/
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (8th ed.):
ProCon.org. "Historical Timeline: A History of the ACLU from 1915 to Present." ProCon.org. Last modified on August 16, 2013. Accessed April 15, 2021. https://www.procon.org/historical-timeline-a-history-of-the-aclu-from-1915-to-present/