Cor Groenewold, Christelijk en sociaal. Biografie van J.R. Slotemaker de Bruïne. TSEG - The Low Countries Journal of Social and Economic History, [S. l.], v. 5, n. 4, p. 173–175, 2008. DOI: 10.18352/tseg.551. Disponível em: https://tseg.nl/article/view/7821.. Acesso em: 3 jul. 2024.