HELMERS, Helmer. Ole Peter Grell. Brethren in Christ. A Calvinist Network in Reformation Europe. De Zeventiende Eeuw: Cultuur in de Nederlanden in interdisciplinair perspectief, Amsterdam, v. 29, n. 1, p. 128, 2013. DOI: 10.18352/dze.8266. Disponível em: https://platform.openjournals.nl/de-zeventiende-eeuw/article/view/26797. Acesso em: 28 jul. 2026.