Hugh Clifford, a review in The Spectator, November 29, 1902.

Leonard F. Dean, editor, Joseph Conrad's 'Heart of Darkness" Backgrounds and Criticisms, Prentice-Hall, 1960 Edward Garnett, Conrad' The Cntical Heritage, edited by Norman Sherry, Routledge & Kegan Paul, 1973, pp. 131-33.

Albert J Guerard, an introduction to Heart of Darkness and The Secret Sharer, Signet Books/New American Library, 1950

Frederick R Karl, Joseph Conrad The Three Lives, Farrar, Straus, 1979.

Kingsley Widmer, "Joseph Conrad," in Concise Dictionary of British Literary Biography, Volume 5. Late Victorian and Edwardian Writers, 1890-1914, Gale Research, 1992, pp 84-122