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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিKeckley, 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.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিKeckley, 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.