Bloom, Harold. Shakespeare: The Invention of the Human. New York: Riverhead Books, 1998.
Shakespeare, William. The Comedy of Errors. New York: Penguin Books, 1999.
Wells, Stanley, and Taylor, Gary. William Shakespeare: The Complete Works. Oxford: Clarendon Press, 1994.
I have written my own act wise summary of comedy of errors. Hope it will help students like me.