Steven Runciman: [https://web.archive.org/web/20151210215537/https://books.google.de/books?id=0GsTqFtBIiUC&printsec=frontcover&dq=runciman+Steven&hl=de&sa=X&ei=fbWJT7PAH8n3sgaJ45XBCw#v=onepage&q=runciman%20Steven&f=false The Sicilian Vespers: A History of the Mediterranean World in the Later Thirteenth Century] Cambridge University Press 1958, ISBN 0-521-43774-1 (englische Ausgabe mit Onlinetexten)