MLA

I couldn't figure out how to cite the Freud thing because I don't know very much about the document itself. But, here are the rest of the things I am citing.

Murfin, Ross C. Heart of Darkness: A Case Study in Contemporary Criticism. New York: St. Martin's Press, 1989. Print.

Conrad, Joseph. Heart of Darkness. 1902. Charlottesville: Feedbooks,  2012. E-book.

Martel, Yann. Life of Pi. Orlando: Harcourt, Inc., 2001.