Rovers F. C. Kirkels, Architect van onderwijsvernieuwing. Denken en daden van Gerrit Bolkestein 1871-1956. BMGN-LCHR [Internet]. 2010 Jan. 1 [cited 2024 Apr. 20];125(4). Available from: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-108226