Grycz, Marian. “Handelsbeziehungen Der Stadt Poznan Bis Ende Des XVII. Jahrhunderts [Trade Relations of the City of Poznan until the End of the 17th Century]”. Studia Historiae Oeconomicae 2, no. 1 (October 3, 1968): 43–56. Accessed October 14, 2026. https://pressto.amu.edu.pl/index.php/sho/article/view/57189.