Cita APA (7th ed.)

Demacopoulos, G. E. (2015). Gregory the Great: Ascetic, pastor, and first man of Rome. University of Notre Dame Press.

Cita Chicago (17th ed.)

Demacopoulos, George E. Gregory the Great: Ascetic, Pastor, and First Man of Rome. Notre Dame, Indiana: University of Notre Dame Press, 2015.

Cita MLA (9th ed.)

Demacopoulos, George E. Gregory the Great: Ascetic, Pastor, and First Man of Rome. University of Notre Dame Press, 2015.