Lichtheim, G. (1969). The origins of Socialism. London: Weidenfeld and Nicolson.
芝加哥风格引文Lichtheim, George. The Origins of Socialism. London: Weidenfeld and Nicolson, 1969.
MLA引文Lichtheim, George. The Origins of Socialism. London: Weidenfeld and Nicolson, 1969.
警告：这些引文格式不一定是100％准确.