APA (6th ed.):
ProCon.org. (2013, May 7). 221 Books Citing ProCon.org. Retrieved from https://prosandcons.org/221-books-citing-procon-org/
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "221 Books Citing ProCon.org," ProCon.org. last modified May 7, 2013. https://prosandcons.org/221-books-citing-procon-org/.
MLA (8th ed.):
ProCon.org, "221 Books Citing ProCon.org." ProCon.org. 7 May 2013, prosandcons.org/221-books-citing-procon-org/
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (8th ed.):
ProCon.org. "221 Books Citing ProCon.org." ProCon.org. Last modified on May 7, 2013. Accessed March 9, 2021. https://prosandcons.org/221-books-citing-procon-org/