J. Tyssens, Strijdpunt of pasmunt? Levensbeschouwelijk links en de schoolkwestie, 1918-1940. BMGN - Low Countries Historical Review, [S. l.], v. 109, n. 4, p. 686–687, 1994. DOI: 10.18352/bmgn-lchr.3937. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104530.. Acesso em: 15 sep. 2024.