Ball, C. (2012). Fifty years in chains: Or, The life of an American slave. University of North Carolina Press.
芝加哥风格引文Ball, Charles. Fifty Years in Chains: Or, The Life of an American Slave. Chapel Hill: University of North Carolina Press, 2012.
MLA引文Ball, Charles. Fifty Years in Chains: Or, The Life of an American Slave. University of North Carolina Press, 2012.
警告：这些引文格式不一定是100％准确.