Brown, R. A. (1972). The origins of modern Europe: The medieval heritage of western civilization. London: Constable.
Trích dẫn kiểu ChicagoBrown, R. Allen. The Origins of Modern Europe: The Medieval Heritage of Western Civilization. London: Constable, 1972.
MLA引文Brown, R. Allen. The Origins of Modern Europe: The Medieval Heritage of Western Civilization. London: Constable, 1972.
警告:這些引文格式不一定是100%准確.