GRAAFF, B.G.J. de. P. Stoop, De geheime rapporten van H. J. Noordewier. Berlijn 1933-1935. BMGN - Low Countries Historical Review, [S. l.], v. 105, n. 3, p. 474–475, 1990. DOI: 10.18352/bmgn-lchr.3285. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103741.. Acesso em: 23 nov. 2024.