Messing, F.A.M. “F. Vanduffel, Industrialisatie En Verandering: Lommel Tussen 1890 En 1914”. BMGN - Low Countries Historical Review 100, no. 2 (January 1, 1985): 310–311. Accessed November 21, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-102836.