APA (7th ed.) Citation

Conrad, J. (2007). Heart of darkness, with, the congo diary. Penguin Books.

Chicago Style (17th ed.) Citation

Conrad, Joseph. Heart of Darkness, with, the Congo Diary. London: Penguin Books, 2007.

MLA (9th ed.) Citation

Conrad, Joseph. Heart of Darkness, with, the Congo Diary. Penguin Books, 2007.

Warning: These citations may not always be 100% accurate.