APA (6th ed.):
ProCon.org. (2010, August 31). Marc Siegel, MD. Retrieved from https://healthcarereform.procon.org/source-biographies/marc-siegel/
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "Marc Siegel, MD," ProCon.org. last modified August 31, 2010. https://healthcarereform.procon.org/source-biographies/marc-siegel/.
MLA (8th ed.):
ProCon.org, "Marc Siegel, MD." ProCon.org. 31 Aug. 2010, healthcarereform.procon.org/source-biographies/marc-siegel/
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (8th ed.):
ProCon.org. "Marc Siegel, MD." ProCon.org. Last modified on August 31, 2010. Accessed January 18, 2021. https://healthcarereform.procon.org/source-biographies/marc-siegel/