Sowards, J. K. (1991). Makers of the western tradition (5th ed.). St. Martin's.
Cita Chicago Style (17a ed.)Sowards, J. Kelley. Makers of the Western Tradition. 5th ed. New York: St. Martin's, 1991.
Cita MLA (9a ed.)Sowards, J. Kelley. Makers of the Western Tradition. 5th ed. St. Martin's, 1991.
Precaución: Estas citas no son 100% exactas.