De feodale maatschappij der middeleeuwen. BMGN - Low Countries Historical Review, [S. l.], v. 89, n. 2, p. 193–211, 1974. DOI: 10.18352/bmgn-lchr.1815. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-101975.. Acesso em: 25 nov. 2024.