WASILKIEWICZ, Kamil. The impact of the crusade ideas in Western Pomerania (from the twelfth to the first quarter of the thirteenth century ). Slavia Antiqua. Rocznik poświęcony starożytnościom słowiańskim, [S. l.], n. 64, p. 335–352, 2023. DOI: 10.14746/sa.2023.64.12. Disponível em: https://pressto.amu.edu.pl/index.php/sla/article/view/40359. Acesso em: 17 maj. 2024.