"Martyrs and Confessors". Department of Christian Education of the Orthodox Church in America. Archived from the original on 2023-07-25. Retrieved 2023-07-25.
web.archive.org
"Martyrs and Confessors". Department of Christian Education of the Orthodox Church in America. Archived from the original on 2023-07-25. Retrieved 2023-07-25.
wikisource.org
en.wikisource.org
Beccari, Camillo (1908). "Confessor" . In Herbermann, Charles (ed.). Catholic Encyclopedia. Vol. 4. New York: Robert Appleton Company.