M.R. Thielemans, W. Vandewoude, Le roi Albert au travers de ses lettres inédites 1882-1916. BMGN - Low Countries Historical Review, [S. l.], v. 99, n. 2, p. 260–262, 1984. DOI: 10.18352/bmgn-lchr.2491. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-102704.. Acesso em: 2 jul. 2024.