APA (7e ed.) Bronvermelding
Demacopoulos, G. E. (2015). Gregory the Great: Ascetic, pastor, and first man of Rome. University of Notre Dame Press.
Chicago (17e ed.) Bronvermelding
Demacopoulos, George E. Gregory the Great: Ascetic, Pastor, and First Man of Rome. Notre Dame, Indiana: University of Notre Dame Press, 2015.
MLA (9e ed.) Bronvermelding
Demacopoulos, George E. Gregory the Great: Ascetic, Pastor, and First Man of Rome. University of Notre Dame Press, 2015.
Let op: Deze citaties zijn niet altijd 100% accuraat.