Jenkins, Westerink (eds), Nicholas Patriarch of Constantinople DOT 2 (1973)
[Βιβλιογραφία]
Nicolas I, Patriarch of Constantinople, Nicolas I Patriarch of Constantinople. Letters, Romilly James Heald Jenkins and Leendert Gerrit Westerink (eds and trs), v. 2, series Dumbarton Oaks Texts (Dumbarton Oaks Research Library and Collection, Washington, D.C. 1973)