Archer, P. (1941). The Christian calendar and the Gregorian reform. Fordham University Press.
芝加哥风格引文Archer, Peter. The Christian Calendar and the Gregorian Reform. New York: Fordham University Press, 1941.
MLA引文Archer, Peter. The Christian Calendar and the Gregorian Reform. Fordham University Press, 1941.
警告：这些引文格式不一定是100％准确.