Zupnick, I. L. The vicissitudes of the hero as martyr: Irving L. Zupnick. 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).
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Zupnick, Irving L. "The Vicissitudes of the Hero as Martyr: Irving L. Zupnick." 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) .
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Zupnick, Irving L. "The Vicissitudes of the Hero as Martyr: Irving L. Zupnick." 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), .