ŁOWMIAŃSKI, Henryk. Slavery and its Role in the Formation of Medieval Society Among the Slavs. Studia Historiae Oeconomicae, [S. l.], v. 1, n. 1, p. 43–60, 1967. DOI: 10.14746/sho.1967.01.1.002. Disponível em: https://pressto.amu.edu.pl/index.php/sho/article/view/56914. Acesso em: 3 oct. 2026.