Dźwigała, Bartłomiej. “Evolution of the Account of Duke Godfrey’s Deed of Hewing the Enemy through the Middle With a Single Blow During the Siege of Antioch by the First Crusade. A Source Study”. Przegląd Nauk Historycznych Review of Historical Sciences, vol. 17, no. 3, Dec. 2018, pp. 5-28, https://doi.org/10.18778/1644-857X.17.03.01.