Tignor, R. L. (2014). Worlds together, worlds apart, volume 1: Beginnings through the fifteenth century (Fourth edition.). W. W. Norton and Company.
芝加哥风格引文Tignor, Robert L. Worlds Together, Worlds Apart, Volume 1: Beginnings Through the Fifteenth Century. Fourth edition. New York ; London: W. W. Norton and Company, 2014.
MLA引文Tignor, Robert L. Worlds Together, Worlds Apart, Volume 1: Beginnings Through the Fifteenth Century. Fourth edition. W. W. Norton and Company, 2014.
警告：这些引文格式不一定是100％准确.