"The Chronicle of San Juan De LA Pena: A Fourteenth-Century Official History of the Crown of Aragon" (University of Pennsylvania Press, 1991) ISBN 0-8122-1352-1*O'Callaghan, Joseph.
"The Chronicle of San Juan De La Pena: A Fourteenth-Century Official History of the Crown of Aragon" (University of Pennsylvania Press, 1991) ISBN 0-8122-1352-1* O’Callaghan, Joseph.