SIEBEN, L. A. de Bruyne, Jules Charpentier, afgezant van de Frontbeweging. BMGN - Low Countries Historical Review, [S. l.], v. 107, n. 1, p. 155–156, 1992. DOI: 10.18352/bmgn-lchr.3493. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103977. Acesso em: 2 may. 2024.