ARNOLD, U. Ordines Militares ‒ 20 Konferenzen. Der Weg einer Freundschaft / Ordines Militares – 20 Conferences. The Way of a Friendship. Ordines Militares Colloquia Torunensia Historica. Yearbook for the Study of the Military Orders, [S. l.], v. 25, p. 387–420, 2020. DOI: 10.12775/OM.2020.015. Disponível em: https://apcz.umk.pl/OM/article/view/OM.2020.015. Acesso em: 18 jan. 2022.