J. de Bruijn, P.E. Werkman, Van tuindersknecht tot onderkoning. Biografie van Marinus Ruppert, I, De jaren 1911-1947. BMGN - Low Countries Historical Review, [S. l.], v. 117, n. 1, p. 129–129, 2002. DOI: 10.18352/bmgn-lchr.5645. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-106478.. Acesso em: 23 nov. 2024.