Christianson, S. (2010). Freeing Charles: The struggle to free a slave on the eve of the Civil War. University of Illinois Press.
芝加哥风格引文Christianson, Scott. Freeing Charles: The Struggle to Free a Slave on the Eve of the Civil War. Urbana: University of Illinois Press, 2010.
MLA引文Christianson, Scott. Freeing Charles: The Struggle to Free a Slave on the Eve of the Civil War. University of Illinois Press, 2010.
警告：这些引文格式不一定是100％准确.