APA (6th ed.):
ProCon.org. (2013, April 12). Should the US authorize the Keystone XL pipeline to import tar sand oil from Canada? Retrieved from https://www.procon.org/should-the-us-authorize-the-keystone-xl-pipeline-to-import-tar-sand-oil-from-canada/
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "Should the US authorize the Keystone XL pipeline to import tar sand oil from Canada?," ProCon.org. last modified April 12, 2013. https://www.procon.org/should-the-us-authorize-the-keystone-xl-pipeline-to-import-tar-sand-oil-from-canada/.
MLA (8th ed.):
ProCon.org, "Should the US authorize the Keystone XL pipeline to import tar sand oil from Canada?" ProCon.org. 12 Apr. 2013, www.procon.org/should-the-us-authorize-the-keystone-xl-pipeline-to-import-tar-sand-oil-from-canada/
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (8th ed.):
ProCon.org. "Should the US authorize the Keystone XL pipeline to import tar sand oil from Canada?" ProCon.org. Last modified on April 12, 2013. Accessed June 25, 2021. https://www.procon.org/should-the-us-authorize-the-keystone-xl-pipeline-to-import-tar-sand-oil-from-canada/