van der Vlis, Ingrid. “Henk Looijesteijn, Ondersteuning in Voor- En Tegenspoed. 250 Jaar Weduwenbeurs Doesburg”. TSEG - The Low Countries Journal of Social and Economic History 7, no. 4 (December 15, 2010): 87–89. Accessed April 23, 2024. https://tseg.nl/article/view/7679.