“J.J. Huizinga, Friesland En De Tweede Wereldoorlog”. BMGN - Low Countries Historical Review 113, no. 3 (January 1, 1998): 450–451. Accessed December 22, 2024. https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105514.