Kossmann, E.H. “G.J. Hooykaas, De Briefwisseling Van J. R. Thorbecke, I, 1830-1833”. BMGN - Low Countries Historical Review 92, no. 1 (January 1, 1977): 112–114. Accessed November 21, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-102144.