* Jozon, "L'Etat indépendant du Congo" (Paris, 1900)* Kassai, "La civilisation africaine, 1876–88" (Brussels, 1888)* Morel, E. D. (Edmund Dene), 1873–1924, "E. D. Morel's history of the Congo reform movement"; by Wm.
* Jozon, "L'Etat indépendant du Congo" (Paris, 1900)* Kassai, "La civilisation africaine, 1876–88" (Brussels, 1888)* Morel, E. D. (Edmund Dene), 1873–1924, "E. D. Morel's history of the Congo reform movement"; by Wm.