Fredrickson, G. M. (2008). Big enough to be inconsistent: Abraham Lincoln confronts slavery and race. Harvard University Press.
Chicago-referens (17:e uppl.)Fredrickson, George M. Big Enough to Be Inconsistent: Abraham Lincoln Confronts Slavery and Race. Cambridge, Mass.: Harvard University Press, 2008.
MLA-referens (9:e uppl.)Fredrickson, George M. Big Enough to Be Inconsistent: Abraham Lincoln Confronts Slavery and Race. Harvard University Press, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.