“Nederlandse Rekeningen in De Tolregisters Van Koningsbergen”. BMGN - Low Countries Historical Review 86, no. 3 (January 1, 1971): 400–406. Accessed September 17, 2024. https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-101845.