Bosmans, J. “L.J. Giebels, De Greet Hofmans-Affaire. Hoe De Nederlandse Monarchie Bijna Ten Onder Ging”. BMGN - Low Countries Historical Review 123, no. 2 (January 1, 2008): 310–312. Accessed May 2, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107822.