Kras, Paweł. “„The Gutfor’s Case”, That Is on the Polish Followers of the Early Reformation and Their Trials. Some Remarks Related to Natalia Nowakowska’s Study of King Sigismund I of Poland and Martin Luther”. Odrodzenie i Reformacja w Polsce 64 (January 1, 2021): 123–155. Accessed July 6, 2025. https://apcz.umk.pl/OR/article/view/OiRwP.2020.06.