Haan, I. de. “Discussie over De Metamorfose Van Nederland”. BMGN - Low Countries Historical Review 121, no. 1 (January 1, 2006): 55–75. Accessed November 21, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107271.