O'Callaghan, J. F. (1996). Kings and lords in conflict in late thirteenth-century Castile and Aragon. Iberia and the Mediterranean world of the Middle Ages ; 2: Proceedings from Spain and the Western Mediterranean, 117-135.
Chicago Style (17th ed.) CitationO'Callaghan, Joseph F. "Kings and Lords in Conflict in Late Thirteenth-century Castile and Aragon." Iberia and the Mediterranean World of the Middle Ages ; 2: Proceedings from Spain and the Western Mediterranean 1996: 117-135.
MLA (8th ed.) CitationO'Callaghan, Joseph F. "Kings and Lords in Conflict in Late Thirteenth-century Castile and Aragon." Iberia and the Mediterranean World of the Middle Ages ; 2: Proceedings from Spain and the Western Mediterranean, 1996, pp. 117-135.
Warning: These citations may not always be 100% accurate.