Calderon de la Barca, Pedro, "Life Is a Dream," in Six Plays, Las Americas Publishing Co., 1961, pp. 13-96.

Eliot, T. S., "A Note on The Tower," in Hugo von Hofmannsthal: Selected Plays and Libretti, edited by Michael Hamburger, Pantheon Books, 1963, pp. lxxiii-lxxiv.

Hamburger, Michael, "Introduction," in Hugo von Hofmannsthal: Selected Plays and Libretti, Pantheon Books, 1963, pp. ix-lxxii.

Hofmannsthal, Hugo von, "The Tower (1927)," in Three Plays, Wayne State University Press, 1966, pp. 141-241.

"Hugo von Hofmannsthal," in Contemporary Authors Online, The Gale Group, 1999.

Schwarz, Alfred, "Introduction," in Hugo von Hofmannsthal: Three Plays, Wayne State University Press, 1966, pp. 13-42.