BOOTSMA, N. Nederland op de conferentie van Washington, 1921-1922. BMGN - Low Countries Historical Review, [S. l.], v. 93, n. 1, p. 101–126, 1978. DOI: 10.18352/bmgn-lchr.2019. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-102189. Acesso em: 20 apr. 2024.