Coppejans-Desmedt, H. “J. Gerits, Historische Steden in Limburg”. BMGN - Low Countries Historical Review 107, no. 2 (January 1, 1992): 301–302. Accessed April 18, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104033.