DOBROSIELSKA, A.; GANCEWSKI, J. Summary of an International Conference entitled The History, Ideology and Operations of the Teutonic Order - Historic Symbols, Olsztyn, 2 July 2010. Echa Przeszłości, [S. l.], n. XII, 2019. Disponível em: https://czasopisma.uwm.edu.pl/index.php/ep/article/view/3348. Acesso em: 20 kwi. 2024.