Mellink, A.F. “H.A. Van Wijnen, Willem Drees Democraat”. BMGN - Low Countries Historical Review 101, no. 3 (January 1, 1986): 462–463. Accessed November 29, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103010.