“P. Blaas, Betrokkenheid En Distantie. Bernard Vlekke (1899-1970) En De Studie Van De Internationale Betrekkingen”. BMGN - Low Countries Historical Review 109, no. 1 (January 1, 1994): 118–119. Accessed November 22, 2024. https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104385.