C. Smit, Bescheiden betreffende de buitenlandse politiek van Nederland. Derde periode 1899-1919, VII, 1914-1917. BMGN - Low Countries Historical Review, [S. l.], v. 88, n. 1, p. 114–117, 1973. DOI: 10.18352/bmgn-lchr.1761. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-101918.. Acesso em: 23 jun. 2024.