APA (7th ed.):
ProCon.org. (2017, January 30). 1808 – Foreign Slave Trade Becomes Illegal; 50,000 Slaves Become First “Illegal Aliens” in the US. ProCon.org. https://immigration.procon.org/timeline-events/1808-foreign-slave-trade-becomes-illegal-50000-slaves-become-first-illegal-aliens-in-the-us
[Editor's Note: The APA citation style requires double spacing within entries.]
Chicago (17th ed.):
ProCon.org, "1808 – Foreign Slave Trade Becomes Illegal; 50,000 Slaves Become First “Illegal Aliens” in the US," ProCon.org. last modified January 30, 2017. https://immigration.procon.org/timeline-events/1808-foreign-slave-trade-becomes-illegal-50000-slaves-become-first-illegal-aliens-in-the-us/.
MLA (9th ed.):
ProCon.org, "1808 – Foreign Slave Trade Becomes Illegal; 50,000 Slaves Become First “Illegal Aliens” in the US." ProCon.org. 30 Jan. 2017, immigration.procon.org/timeline-events/1808-foreign-slave-trade-becomes-illegal-50000-slaves-become-first-illegal-aliens-in-the-us
[Editor’s Note: The MLA citation style requires double spacing within entries.]
Turabian (9th ed.):
ProCon.org. "1808 – Foreign Slave Trade Becomes Illegal; 50,000 Slaves Become First “Illegal Aliens” in the US." ProCon.org. Last modified on January 30, 2017. Accessed May 30, 2023. https://immigration.procon.org/timeline-events/1808-foreign-slave-trade-becomes-illegal-50000-slaves-become-first-illegal-aliens-in-the-us/