Ball, C. (2012). Fifty years in chains: Or, The life of an American slave. University of North Carolina Press.
Citace podle Chicago (17th ed.)Ball, Charles. Fifty Years in Chains: Or, The Life of an American Slave. Chapel Hill: University of North Carolina Press, 2012.
Citace podle MLA (9th ed.)Ball, Charles. Fifty Years in Chains: Or, The Life of an American Slave. University of North Carolina Press, 2012.
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