Kossmann, F.J. “F.C. Berkenvelder, Zwolse Regesten, V, 1476-1490”. BMGN - Low Countries Historical Review 112, no. 1 (January 1, 1997): 111–112. Accessed May 2, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105093.