Górczak, Zbyszko. “Unsuccessful Attempts at the Incorporation of Cities in the District Duchy of Greater Poland in the 13th Century”. Studia Historiae Oeconomicae 41, no. 1 (July 26, 2023): 1–28. Accessed November 22, 2024. https://pressto.amu.edu.pl/index.php/sho/article/view/38944.