), Greenwood Publishing Group, 2004* Moore, Wilbert Ellis, "American Negro Slavery and Abolition: A Sociological Study", Ayer Publishing, 1980* Morgan, Edmund S. "American Slavery, American Freedom: The Ordeal of Colonial Virginia " W.W. Norton, 1975.
), Greenwood Publishing Group, 2004* Moore, Wilbert Ellis, "American Negro Slavery and Abolition: A Sociological Study", Ayer Publishing, 1980* Morgan, Edmund S. "American Slavery, American Freedom: The Ordeal of Colonial Virginia " W.W. Norton, 1975.