APA (6th ed.):
ProCon.org. (2007, May 1). ProCon.org launched its 9th. Retrieved from https://prosandcons.org/procon-org-launched-its-9th/
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "ProCon.org launched its 9th," ProCon.org. last modified May 1, 2007. https://prosandcons.org/procon-org-launched-its-9th/.
MLA (8th ed.):
ProCon.org, "ProCon.org launched its 9th." ProCon.org. 1 May 2007, prosandcons.org/procon-org-launched-its-9th/
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (8th ed.):
ProCon.org. "ProCon.org launched its 9th." ProCon.org. Last modified on May 1, 2007. Accessed January 25, 2021. https://prosandcons.org/procon-org-launched-its-9th/