Liagre Böhl, H. de. “S. Dudink, F. Hoeneveld, Deugdzaam Liberalisme. Sociaal-Liberalisme in Nederland 1870-1901”. BMGN - Low Countries Historical Review 114, no. 1 (January 1, 1999): 126–128. Accessed May 6, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105643.