VON GÜTTNER-SPORZYŃSKI, Darius. Evolution and Adaptation: The Order of Saint John in War and Peace. Ordines Militares Colloquia Torunensia Historica. Yearbook for the Study of the Military Orders. Online. 1 August 2013. Vol. 18, pp. 205-217. [Accessed 18 April 2025]. DOI 10.12775/OM.2013.010.