Helmers, Helmer. “Jaap De Haan, De Eerste Minister Van De Republiek. De Hollandse Raadpensionaris in De Zeventiende Eeuw”. Early Modern Low Countries 8, no. 2 (December 20, 2024): 303–306. Accessed April 19, 2025. https://emlc-journal.org/article/view/20870.