DEURSEN, A. van. J.J. Poelhekke, Het verraad van de pistoletten?. BMGN - Low Countries Historical Review, [S. l.], v. 91, n. 2, p. 308–309, 1976. DOI: 10.18352/bmgn-lchr.1944. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-102105. Acesso em: 23 jan. 2022.