Black, Stephen A. Eugene O'Neill: Beyond Mourning and Tragedy. New Haven: Yale University Press, 1999.
Bogard, Travis. Contour in Time: the Plays of Eugene O'Neill. New York: Oxford University Press, 1988.
Brietzke, Zander. The Aesthetics of Failure: Dynamic Structure in the Plays of Eugene O'Neill. Jefferson: McFarland & Company, 2001
Eugene O'Neill. Ed. Harold Bloom. New York: Chelsea House, 1987.
Eugene O'Neill and the Emergence of American Drama. Ed. Marc Maufort. Amsterdam: Rodopi, 1989.
File on O'Neill. Ed. Stephen Black. London: Methuen Drama, 1993.
Perspectives on O'Neill: New Essays. Ed. Shyamal Bagchee. Victoria, BC., Canada: University of Victoria, 1988.
Ranald, Margaret Loftus. The Eugene O'Neill Companion. Westport: Greenwood Press, 1984
Readings on Eugene O'Neill. Ed. Thomas Siebold. San Diego, CA: Greenhaven Press, 1998.
Shafer, Yvonne. Performing O'Neill: Conversations with Actors and Directors. New York: St. Martin's Press, 2000
In Mourning Becomes Electra you write: "Oedipus was the Theban king who unwittingly killed his father and MURDERED his mother." [Emphasis mine].
It should read: "Oedipus...MARRIED his mother!"
(Oedipus' mother Jocasta did commit suicide after learning her lover was her son. Oedipus however did NOT "murder" her.)