L. Vints, Broekx en de christelijke arbeidersbeweging in Limburg 1881-1968. BMGN - Low Countries Historical Review, [S. l.], v. 107, n. 1, p. 150–151, 1992. DOI: 10.18352/bmgn-lchr.3490. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103974.. Acesso em: 30 jun. 2024.