Graaff, B.G.J. de. “M.W. Jensen, G. Platje, De MARID. De Marine Inlichtingendienst Van Binnenuit Belicht”. BMGN - Low Countries Historical Review 114, no. 1 (January 1, 1999): 141–143. Accessed April 19, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105653.