Lietheim, G. (1972). Europe in the Twentieth Century. Weidenfeld.
Chicago Edition CitationLietheim, George. Europe in the Twentieth Century. London: Weidenfeld, 1972.
MLA引文Lietheim, George. Europe in the Twentieth Century. Weidenfeld, 1972.
警告：這些引文格式不一定是100％准確.