“S. Groenveld, M. Wintle, Under the Sign of Liberalism. Varieties of Liberalism in past and Present”. BMGN - Low Countries Historical Review 114, no. 2 (January 1, 1999): 293–294. Accessed June 30, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105723.