Vita Gregorii Magni Papae auctore Joanne Diacono

John, the Deacon, Vita Gregorii Magni Papae auctore Joanne Diacono, in: Patrologiae Cursus Completus, Series Latina‎ 75, edited by Migne‎, J. P., Paris‎, 1844-1880: cols. 59–242.
‎♦ Life of Gregory the Great, pope 590–604; life written after 872.