Power, E. E. (1963). Medieval people ([10th ed.].). Barnes & Noble.
芝加哥风格引文Power, Eileen Edna. Medieval People. [10th ed.]. New York: Barnes & Noble, 1963.
MLA引文Power, Eileen Edna. Medieval People. [10th ed.]. Barnes & Noble, 1963.
警告：这些引文格式不一定是100％准确.