W. Otterspeer, Leiden oriental connections 1850-1940. BMGN - Low Countries Historical Review, [S. l.], v. 110, n. 1, p. 137–140, 1995. DOI: 10.18352/bmgn-lchr.3983. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104582.. Acesso em: 30 jun. 2024.