APA-ийн эшлэл(7 дахь хэвлэлт)

Ball, C. (2012). Fifty years in chains: Or, The life of an American slave. University of North Carolina Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Ball, Charles. Fifty Years in Chains: Or, The Life of an American Slave. Chapel Hill: University of North Carolina Press, 2012.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Ball, Charles. Fifty Years in Chains: Or, The Life of an American Slave. University of North Carolina Press, 2012.