1340s (English Wikipedia)

"Primates of the Apostolic See of Antioch". Antiochian Orthodox Christian Archdiocese. Primates of the Apostolic See of Antioch. Archived from the original on 23 February 2020. Retrieved 3 April 2020.

archive.today

"Mound 55". Cahokia Mounds State Historic Site. 2008. Archived from the original on 2013-06-15. Retrieved 2009-06-18.

"Käfigturm (Prison Tower)". Berninfo.com. Archived from the original on 2007-01-29. Retrieved 2008-07-11.

"Louis I king of Hungary". Britannica. Encyclopaedia Britannica. Retrieved 3 April 2020.

"Mound 55". Cahokia Mounds State Historic Site. 2008. Archived from the original on 2013-06-15. Retrieved 2009-06-18.

"Welcome to Cahokia Mounds". Cahokia Mounds State Historic Site. 2008. Retrieved 2009-06-18.

"William of Ockham, Philosopher of Nominalism". Council for Research in Values and Philosophy. Archived from the original on 2008-07-20. Retrieved 2008-07-12.

Schwegman, John E. "Kincaid Mounds – A Prehistoric Cultural and Religious Center In Southern Illinois". Kincaid Mounds Organization. Archived from the original on 2009-05-17. Retrieved 2009-06-18.

"William of Ockham". Catholic Encyclopedia (1913). Newadvent.org. Retrieved 2008-07-12.

"Primates of the Apostolic See of Antioch". Antiochian Orthodox Christian Archdiocese. Primates of the Apostolic See of Antioch. Archived from the original on 23 February 2020. Retrieved 3 April 2020.
"Käfigturm (Prison Tower)". Berninfo.com. Archived from the original on 2007-01-29. Retrieved 2008-07-11.
"A Historical University, Tradition and Progress since the 13th century". University of Valladolid. Archived from the original on 2008-12-12. Retrieved 2008-07-11.
"William of Ockham, Philosopher of Nominalism". Council for Research in Values and Philosophy. Archived from the original on 2008-07-20. Retrieved 2008-07-12.
Schwegman, John E. "Kincaid Mounds – A Prehistoric Cultural and Religious Center In Southern Illinois". Kincaid Mounds Organization. Archived from the original on 2009-05-17. Retrieved 2009-06-18.
"An Archaeological Sketch of Moundville". University of Alabama. 2009. Archived from the original on 2007-11-18. Retrieved 2009-06-18.

John., Norris (2013). Artillery : a History. New York: The History Press. ISBN 9780750953238. OCLC 856868990.