Schimmer 2010. Schimmer, Russell (2010). "Congo Free State". Genocide Studies Program. Yale University. Archived from the original on 7 December 2013. Retrieved 10 December 2013.
worldcat.org
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Carson 1974, p. 206. Carson, Patricia (1974). The Fair Face of Flanders (Rev. ed.). Ghent: E.Story-Scientia. OCLC463182600.
Carson 1974, pp. 200–1. Carson, Patricia (1974). The Fair Face of Flanders (Rev. ed.). Ghent: E.Story-Scientia. OCLC463182600.
Carson 1974, pp. 211–2. Carson, Patricia (1974). The Fair Face of Flanders (Rev. ed.). Ghent: E.Story-Scientia. OCLC463182600.
de Barsy 1972, pp. 12–9. de Barsy, E.G., ed. (1972). La Société Générale de Belgique, 1822–1972 (in French). Brussels: Société Générale. OCLC699019.
Carson 1974, p. 216. Carson, Patricia (1974). The Fair Face of Flanders (Rev. ed.). Ghent: E.Story-Scientia. OCLC463182600.
Carson 1974, p. 225. Carson, Patricia (1974). The Fair Face of Flanders (Rev. ed.). Ghent: E.Story-Scientia. OCLC463182600.
yale.edu
Schimmer 2010. Schimmer, Russell (2010). "Congo Free State". Genocide Studies Program. Yale University. Archived from the original on 7 December 2013. Retrieved 10 December 2013.