Lichtheim, G. (1964). Marxism: A historical and critical study. Frederick A. Praeger.
芝加哥风格引文Lichtheim, George. Marxism: A Historical and Critical Study. New York: Frederick A. Praeger, 1964.
MLA引文Lichtheim, George. Marxism: A Historical and Critical Study. Frederick A. Praeger, 1964.
警告：这些引文格式不一定是100％准确.