1. Allen, John J. “Staging.” The Prince in the Tower: Perceptions of La vida es sueño. Ed. Frederick A. de Armas. Lewisburg: Bucknell UP, 1993. 27–38. Print.
2. Belcher, David. “What Dreams May Come.” Opera News July 2010: 40–41. Print.
3. Calderón de la Barca, Pedro. La vida es sueño. Ed. Ciriaco Morón. Madrid: Cátedra, 1986. Print.
4. Calderón de la Barca, Pedro. Life Is a Dream. Trans. William E. Colford. Woodbury, NY: Barron's Educational Series, Inc., 1958. Print.
5. Calderón de la Barca, Pedro. Life Is a Dream. Trans. Roy Campbell. Life Is a Dream and Other Spanish Classics. Ed. Eric Bentley. New York: Applause Theatre Book Publishers, 1959. Print.