Πάπας Αγαπητός Α΄: Διαφορά μεταξύ των αναθεωρήσεων

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* {{Cite book|last=Dudden|first=Frederick H.|title=Gregory the Great|publisher=Longmans, Green, and Co|location=London|year=1905}}

* {{citation | last=Martindale | first=John R. | last2=Jones | first2=A.H.M. | last3=Morris | first3=John | title=The Prosopography of the Later Roman Empire, Volume III: AD 527–641 | year=1992 | publisher=Cambridge University Press | isbn=978-0521201608 | url = http://books.google.gr/books?id=fBImqkpzQPsC}}