ROOY, P. de. M. Brinkman, Willem Drees, de SDAP en de PvdA. BMGN - Low Countries Historical Review, [S. l.], v. 115, n. 1, p. 172–173, 2000. DOI: 10.18352/bmgn-lchr.5201. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105966.. Acesso em: 24 nov. 2024.