Prof. John P. Adams, Modern and Classical Languages and Literatures (13 November 2012). "Sede Vacante of 1549–1550". Csun.edu. Retrieved 23 June 2013.
Prof. John P. Adams, Modern and Classical Languages and Literatures (13 November 2012). "Sede Vacante of April, 1555". Csun.edu. Retrieved 23 June 2013.