MÖNNICH, C.W. De feodaliteit in de christelijke reflexie. BMGN - Low Countries Historical Review, [S. l.], v. 89, n. 2, p. 262–287, 1974. DOI: 10.18352/bmgn-lchr.1819. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-101979.. Acesso em: 22 dec. 2024.