Walker, C. E. (2009). Mongrel nation: The America begotten by Thomas Jefferson and Sally Hemings. University of Virginia Press.
Chicago-viite (17. p.)Walker, Clarence Earl. Mongrel Nation: The America Begotten by Thomas Jefferson and Sally Hemings. Charlottesville: University of Virginia Press, 2009.
MLA-viite (9. p.)Walker, Clarence Earl. Mongrel Nation: The America Begotten by Thomas Jefferson and Sally Hemings. University of Virginia Press, 2009.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.