Γεροστέργιος, Α. (1988). St. Photios the Great. Belmont, Massachusetts: Institute for Byzantine and Modern Greek Studies.
Παραπομπή Chicago StyleΓεροστέργιος, Αστέριος. St. Photios the Great. Belmont, Massachusetts: Institute for Byzantine and Modern Greek Studies, 1988.
Deismireacht MLAΓεροστέργιος, Αστέριος. St. Photios the Great. Belmont, Massachusetts: Institute for Byzantine and Modern Greek Studies, 1988.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.