Fanning, W. (1911). "Promotor Fidei". Catholic Encyclopedia. Vol. 12. New York: Robert Appleton Company. OCLC811253232. Retrieved 19 January 2018.
Burtsell, Richard (1907). "Advocatus Diaboli". The Catholic Encyclopedia. Vol. 1. New York: Robert Appleton Company. OCLC875120339. Retrieved 19 January 2018.
Fanning, W. (1911). "Promotor Fidei". Catholic Encyclopedia. Vol. 12. New York: Robert Appleton Company. OCLC811253232. Retrieved 19 January 2018.
Burtsell, Richard (1907). "Advocatus Diaboli". The Catholic Encyclopedia. Vol. 1. New York: Robert Appleton Company. OCLC875120339. Retrieved 19 January 2018.