Berlin, Ira (2004). "American Slavery in History and Memory and the Search for Social Justice". The Journal of American History. 90 (4): 1251–1268, 1253. doi:10.2307/3660347. JSTOR3660347.
jstor.org
Berlin, Ira (2004). "American Slavery in History and Memory and the Search for Social Justice". The Journal of American History. 90 (4): 1251–1268, 1253. doi:10.2307/3660347. JSTOR3660347.