^Joseph Bingham, Origines Ecclesiasticæ vol.1 (H.G. Bohn, 1845), p. 422.
^Antoine Godeau, Algemeine Kirchengeschichte (Rieger, 1771), p. 43.
^Grosses vollständiges Universal-Lexicon Aller Wissenschafften und Künste, Vol. 8 (1734), p. 323.
^Robert Knaplock, The Works, Volume 1 (Robert Knaplock, 1726), p. 411.
^Handbook of ecclesiastical geography and statistics of times of the apostles to the beginning of the sixteenth century, Volume 1 (H. Schultze, 1846), p. 133.