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Casebeer, Evan. Hermann Hesse. New York: Warner Paperback, 1972.

Mileck, Joseph. Hermann Hesse and His Critics: The Criticism and Bibliography of Half a Century. New York: AMS Press, 1966.

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Ziolkowski, Theodore, ed. Hesse: A Collection of Critical Essays. Englewood Cliffs, New Jersey: Prentice Hall, 1973.

———, ed. Hermann Hesse: Autobiographical Writings. New York: Farrar, Strauss, and Giroux, 1972.