VROOMEN, Ingmar. Roeland Harms, Pamfletten en publieke opinie. De zeventiende eeuw, Amsterdam, v. 30, n. 1, p. 139, 1905. Disponível em: https://platform.openjournals.nl/de-zeventiende-eeuw/article/view/26836.. Acesso em: 20 mar. 2026.