Verleun-van de Vriesenaerde, J. (1988). Conrad criticism 1965-1985: Heart of Darkness. Phoenix Press.
Lua i Stíl Chicago (17ú heag.)Verleun-van de Vriesenaerde, Jetty. Conrad Criticism 1965-1985: Heart of Darkness. The Netherlands: Phoenix Press, 1988.
Lua MLA (8ú heag.)Verleun-van de Vriesenaerde, Jetty. Conrad Criticism 1965-1985: Heart of Darkness. Phoenix Press, 1988.
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