Mckeon, P. R. (1978). Hincmar of laon and Carolingian politics. University of Illinois Press.
芝加哥风格引文Mckeon, Peter R. Hincmar of Laon and Carolingian Politics. Chicago: University of Illinois Press, 1978.
MLA引文Mckeon, Peter R. Hincmar of Laon and Carolingian Politics. University of Illinois Press, 1978.
警告：这些引文格式不一定是100％准确.