T. van Gent, Het falen van de Nederlandse gewapende neutraliteit, september 1939-mei 1940. BMGN - Low Countries Historical Review, [S. l.], v. 126, n. 1, p. 134–136, 2011. DOI: 10.18352/bmgn-lchr.7260. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-108295.. Acesso em: 21 dec. 2024.