Padover, S. K. (1978). Karl Marx, an intimate biography. McGraw-Hill.
芝加哥风格引文Padover, Saul K. Karl Marx, an Intimate Biography. New York: McGraw-Hill, 1978.
MLA引文Padover, Saul K. Karl Marx, an Intimate Biography. McGraw-Hill, 1978.
警告：这些引文格式不一定是100％准确.