Straw, C. E. (1988). Gregory the Great: Perfection in imperfection. University of California Press.
芝加哥风格引文Straw, Carole Ellen. Gregory the Great: Perfection in Imperfection. Berkeley: University of California Press, 1988.
MLA引文Straw, Carole Ellen. Gregory the Great: Perfection in Imperfection. University of California Press, 1988.
警告：这些引文格式不一定是100％准确.