Nogmaals Beek en de stamvader van de Bosoniden. BMGN - Low Countries Historical Review, [S. l.], v. 93, n. 3, p. 446–449, 1978. DOI: 10.18352/bmgn-lchr.2049. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-102220.. Acesso em: 25 nov. 2024.