POSTMA, F. Viglius van Aytta en Joachim Hopperus tegenover de Nederlandse opstand. BMGN - Low Countries Historical Review, [S. l.], v. 102, n. 1, p. 29–43, 1987. DOI: 10.18352/bmgn-lchr.2775. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103037. Acesso em: 7 may. 2024.