Blockmans, W.P. “R. Rutte, Stedenpolitiek En Stadsplanning in De Lage Landen (12e-13e Eeuw)”. BMGN - Low Countries Historical Review 121, no. 1 (January 1, 2006): 130–130. Accessed November 21, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107296.