King, W. (2006). The essence of liberty: Free black women during the slave era. University of Missouri Press.
Chicago-čujuhus (17. p.)King, Wilma. The Essence of Liberty: Free Black Women During the Slave Era. Columbia: University of Missouri Press, 2006.
MLA-čujuhus (9. p.)King, Wilma. The Essence of Liberty: Free Black Women During the Slave Era. University of Missouri Press, 2006.
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