Keckley, E. (2011). Behind the scenes, or, Thirty years a slave, and four years in the White House (DocSouth Books ed.). University of North Carolina at Chapel Hill Library : distributed by University of North Carolina at Chapel Hill Press.
Lua i Stíl Chicago (17ú heag.)Keckley, Elizabeth. Behind the Scenes, or, Thirty Years a Slave, and Four Years in the White House. DocSouth Books ed. Chapel Hill, NC: University of North Carolina at Chapel Hill Library : distributed by University of North Carolina at Chapel Hill Press, 2011.
Lua MLA (9ú heag.)Keckley, Elizabeth. Behind the Scenes, or, Thirty Years a Slave, and Four Years in the White House. DocSouth Books ed. University of North Carolina at Chapel Hill Library : distributed by University of North Carolina at Chapel Hill Press, 2011.