KWAŚNY, Zbigniew. Foreign Trade of the Free State of Kraków (in the Light of Reports from the Prussian Residents). Studia Historiae Oeconomicae, [S. l.], v. 9, n. 1, p. 141–160, 1974. DOI: 10.14746/sho.1974.09.1.010. Disponível em: https://pressto.amu.edu.pl/index.php/sho/article/view/57881. Acesso em: 5 nov. 2026.