KREEM, J. The internal preconditions of the secularization of the Teutonic Order in Livonia. Ordines Militares Colloquia Torunensia Historica. Yearbook for the Study of the Military Orders, [S. l.], v. 22, p. 98–108, 2017. DOI: 10.12775/OM.2017.004. Disponível em: https://apcz.umk.pl/OM/article/view/OM.2017.004. Acesso em: 31 jan. 2023.