CORDFUNKE, E. H.; MAAT, G. J. Willem II of Floris de Voogd?. BMGN - Low Countries Historical Review, [S. l.], v. 130, n. 4, p. 99–108, 2015. DOI: 10.18352/bmgn-lchr.10146. Disponível em: https://bmgn-lchr.nl/article/view/6394. Acesso em: 1 may. 2024.