Bosmans, J.L.J. “H.A. Groeneveld, De Staatssecretaris in Nederland 1948-1988”. BMGN - Low Countries Historical Review 109, no. 3 (January 1, 1994): 511–513. Accessed November 21, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104498.