Paul, Herman. “H.W. Von Der Dunk, De Glimlachende Sfinx. Kernvragen in De Geschiedenis”. BMGN - Low Countries Historical Review 127, no. 2 (June 25, 2012): review 31. Accessed November 24, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-109805.