Wijna, S. “P.M.Y. Timmer, Metz & Co. De Creatieve Jaren”. BMGN - Low Countries Historical Review 112, no. 2 (January 1, 1997): 297–298. Accessed November 4, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105180.