Bosmans, J.L.J. “C.A. Groenewold, H.P. Marchant (1869-1956). ’Le Tigre néerlandais’”. BMGN - Low Countries Historical Review 110, no. 1 (January 1, 1995): 143–144. Accessed May 5, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104585.