MOL, Johannes Adriaan. Singing nuns and lay sisters in the Frisian houses of the Teutonic Order to 1510. Ordines Militares Colloquia Torunensia Historica. Yearbook for the Study of the Military Orders, [S. l.], v. 29, p. 313–335, 2024. DOI: 10.12775/OM.2024.013. Disponível em: https://apcz.umk.pl/OM/article/view/43882. Acesso em: 28 jan. 2025.