H. Langeveld, Schipper naast God. Hendrikus Colijn 1869-1944, II, 1933-1944. BMGN-LCHR [Internet]. 2005 Jan. 1 [cited 2024 Jul. 18];120(1):157-9. Available from: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107092