APA (6th ed.):
ProCon.org. (2011, February 2). UPDATED: 23 Constitutional Challenges to Federal Health Care Laws. Retrieved from https://www.procon.org/updated-23-constitutional-challenges-to-federal-health-care-laws/
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "UPDATED: 23 Constitutional Challenges to Federal Health Care Laws," ProCon.org. last modified February 2, 2011. https://www.procon.org/updated-23-constitutional-challenges-to-federal-health-care-laws/.
MLA (8th ed.):
ProCon.org, "UPDATED: 23 Constitutional Challenges to Federal Health Care Laws." ProCon.org. 2 Feb. 2011, www.procon.org/updated-23-constitutional-challenges-to-federal-health-care-laws/
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (8th ed.):
ProCon.org. "UPDATED: 23 Constitutional Challenges to Federal Health Care Laws." ProCon.org. Last modified on February 2, 2011. Accessed January 15, 2021. https://www.procon.org/updated-23-constitutional-challenges-to-federal-health-care-laws/