H. Schmal, Nederland in de twintigste eeuw, H. Bas, K. van den Heuvel, ed. BMGN-LCHR [Internet]. 1997 Jan. 1 [cited 2024 Jul. 2];112(2):294-6. Available from: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105178