Sundquist, E. J. (1990). Frederick Douglass: New literary and historical essays (1.publ.). Cambridge Univ. Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSundquist, Eric J. Frederick Douglass: New Literary and Historical Essays. 1.publ. Cambridge [u.a.]: Cambridge Univ. Press, 1990.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSundquist, Eric J. Frederick Douglass: New Literary and Historical Essays. 1.publ. Cambridge Univ. Press, 1990.
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