Γεροστέργιος, Α. (1988). St. Photios the Great. Belmont, Massachusetts: Institute for Byzantine and Modern Greek Studies.
शिकागो स्टाइल उद्धरणΓεροστέργιος, Αστέριος. St. Photios the Great. Belmont, Massachusetts: Institute for Byzantine and Modern Greek Studies, 1988.
एमएलए उद्धरणΓεροστέργιος, Αστέριος. St. Photios the Great. Belmont, Massachusetts: Institute for Byzantine and Modern Greek Studies, 1988.
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