BEYEN, M. E.H. Kossmann, Familiearchief. Notities over voorouders, tijdgenoten en mijzelf. BMGN - Low Countries Historical Review, [S. l.], v. 115, n. 3, p. 427–428, 2000. DOI: 10.18352/bmgn-lchr.5288. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-106069.. Acesso em: 22 dec. 2024.