K. Vetter, Wilhelm von Oranien. Eine Biographie. BMGN - Low Countries Historical Review, [S. l.], v. 104, n. 2, p. 264–265, 1989. DOI: 10.18352/bmgn-lchr.3082. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103473.. Acesso em: 30 jun. 2024.