APA (6th ed.):
ProCon.org. (2010, December 29). ProCon.org has been used by 1,500 schools in 32 countries and all 50 US states. Retrieved from https://www.procon.org/procon-org-has-been-used-by-1500-schools-in-32-countries-and-all-50-us-states/
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "ProCon.org has been used by 1,500 schools in 32 countries and all 50 US states," ProCon.org. last modified December 29, 2010. https://www.procon.org/procon-org-has-been-used-by-1500-schools-in-32-countries-and-all-50-us-states/.
MLA (8th ed.):
ProCon.org, "ProCon.org has been used by 1,500 schools in 32 countries and all 50 US states." ProCon.org. 29 Dec. 2010, www.procon.org/procon-org-has-been-used-by-1500-schools-in-32-countries-and-all-50-us-states/
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (8th ed.):
ProCon.org. "ProCon.org has been used by 1,500 schools in 32 countries and all 50 US states." ProCon.org. Last modified on December 29, 2010. Accessed January 17, 2021. https://www.procon.org/procon-org-has-been-used-by-1500-schools-in-32-countries-and-all-50-us-states/