DAMEN, L. H. Schmal, Nederland in de twintigste eeuw, H. Bas, K. van den Heuvel, ed. BMGN - Low Countries Historical Review, [S. l.], v. 112, n. 2, p. 294–296, 1997. DOI: 10.18352/bmgn-lchr.4492. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105178.. Acesso em: 17 aug. 2024.