MELLINK, A. H.A. van Wijnen, Willem Drees democraat. BMGN - Low Countries Historical Review, [S. l.], v. 101, n. 3, p. 462–463, 1986. DOI: 10.18352/bmgn-lchr.2752. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103010. Acesso em: 1 may. 2024.