Leyerle, J. The game and play of hero: John Leyerle. Concepts of the hero in the Middle Ages and the Renaissance : papers of the 4. and 5. Annual Conferences of the Center for Medieval and Early Renaissance Studies ... 2 - 3 May 1970, 1 - 2 May 1971.(1975).
Chicago-referens (17:e uppl.)Leyerle, John. "The Game and Play of Hero: John Leyerle." Concepts of the Hero in the Middle Ages and the Renaissance : Papers of the 4. and 5. Annual Conferences of the Center for Medieval and Early Renaissance Studies ... 2 - 3 May 1970, 1 - 2 May 1971.(1975) .
MLA-referens (8:e uppl.)Leyerle, John. "The Game and Play of Hero: John Leyerle." Concepts of the Hero in the Middle Ages and the Renaissance : Papers of the 4. and 5. Annual Conferences of the Center for Medieval and Early Renaissance Studies ... 2 - 3 May 1970, 1 - 2 May 1971.(1975), .