Rosenthal, Joel Thomas (1970). "The Training of an Elite Group: English Bishops in the Fifteenth Century". Transactions of the American Philosophical Society. 60 (5) (New Series ed.): 7. doi:10.2307/1005966. JSTOR1005966.
fiu.edu
Miranda, Salvador. "Henry Beaufort". The Cardinals of the Holy Roman Church. Archived from the original on 11 March 2016. Retrieved 19 April 2009.
jstor.org
Rosenthal, Joel Thomas (1970). "The Training of an Elite Group: English Bishops in the Fifteenth Century". Transactions of the American Philosophical Society. 60 (5) (New Series ed.): 7. doi:10.2307/1005966. JSTOR1005966.
web.archive.org
Miranda, Salvador. "Henry Beaufort". The Cardinals of the Holy Roman Church. Archived from the original on 11 March 2016. Retrieved 19 April 2009.