ebrary, Inc, Scott, S. P., & Burns, R. I. (2001). Medieval government: The world of kings and warriors. University of Pennsylvania Press.
芝加哥风格引文ebrary, Inc, Samuel Parsons Scott, 与 Robert I. Burns. Medieval Government: The World of Kings and Warriors. Philadelphia: University of Pennsylvania Press, 2001.
MLA引文ebrary, Inc, et al. Medieval Government: The World of Kings and Warriors. University of Pennsylvania Press, 2001.
警告：这些引文格式不一定是100％准确.