H. Daalder, Drees en Soestdijk. Over de zaak-Hofmans en andere crises 1948-1958. BMGN - Low Countries Historical Review, [S. l.], v. 122, n. 1, p. 153–155, 2007. DOI: 10.18352/bmgn-lchr.6555. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107502.. Acesso em: 29 sep. 2024.