Gahlbeck, Christian. “Die Rolle Der Stadtkirchen Innerhalb Der Mittelalterlichen Ballei Brandenburg Des Johanniterordens”. Ordines Militares Colloquia Torunensia Historica. Yearbook for the Study of the Military Orders 25 (December 29, 2020): 325–362. Accessed March 28, 2024. https://apcz.umk.pl/OM/article/view/OM.2020.013.