Boogman, J.C. “De Raison d’état-Politicus Johan De Witt”. BMGN - Low Countries Historical Review 90, no. 3 (January 1, 1975): 379–407. Accessed September 27, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-102052.