Huizinga, J.J. “P. Van Schie, Vrijheidsstreven in Verdrukking. Liberale Partijpolitiek in Nederland 1901-1940”. BMGN - Low Countries Historical Review 122, no. 3 (January 1, 2007): 461–463. Accessed May 6, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107572.