KOSSMANN-PUTTO, J.A. D.E.H. de Boer, E.H.P. Cordfunke, H. Sarfatij, Wi Florens.... De Hollandse graaf Floris V in de samenleving van de dertiende eeuw. BMGN - Low Countries Historical Review, [S. l.], v. 113, n. 3, p. 385–386, 1998. DOI: 10.18352/bmgn-lchr.4751. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105464.. Acesso em: 17 aug. 2024.