Cavadini John C. (2001). Gregory the Great: A symposium. University of Notre Dame Press.
芝加哥风格引文Cavadini John C. Gregory the Great: A Symposium. Notre Dame, Indiana: University of Notre Dame Press, 2001.
MLA引文Cavadini John C. Gregory the Great: A Symposium. University of Notre Dame Press, 2001.
警告：这些引文格式不一定是100％准确.