APA (7th ed.) Citation

Conrad, J. (1971). Heart of darkness: An authoritative text backgrounds and sources criticism (2nd ed.). W. W. Norton.

Chicago Style (17th ed.) Citation

Conrad, Joseph. Heart of Darkness: An Authoritative Text Backgrounds and Sources Criticism. 2nd ed. New York: W. W. Norton, 1971.

MLA (9th ed.) Citation

Conrad, Joseph. Heart of Darkness: An Authoritative Text Backgrounds and Sources Criticism. 2nd ed. W. W. Norton, 1971.