PRAK, M.R. Y. Kuiper, Adel in Friesland 1780-1880. BMGN - Low Countries Historical Review, [S. l.], v. 110, n. 2, p. 275–277, 1995. DOI: 10.18352/bmgn-lchr.4026. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104635.. Acesso em: 24 nov. 2024.