Sundquist, E. J. (1990). Frederick Douglass: New literary and historical essays (1.publ.). Cambridge Univ. Press.
Lua i Stíl Chicago (17ú heag.)Sundquist, Eric J. Frederick Douglass: New Literary and Historical Essays. 1.publ. Cambridge [u.a.]: Cambridge Univ. Press, 1990.
Lua MLA (8ú heag.)Sundquist, Eric J. Frederick Douglass: New Literary and Historical Essays. 1.publ. Cambridge Univ. Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.