Yearwood 1993, p. 233. Yearwood, Peter J. (1993). ""In a Casual Way with a Blue Pencil": British Policy and the Partition of Kamerun, 1914-1919". Canadian Journal of African Studies. 27 (2). Taylor & Francis, Ltd. on behalf of the Canadian Association of African Studies: 218–244. doi:10.2307/486060. JSTOR486060.
Joseph 1974, p. 343. Joseph, Richard (1974). "The Royal Pretender: Prince Douala Manga Bell in Paris, 1919-1922 (Un prétendant royal: le prince Douala Manga Bell à Paris, 1919-1922)". Cahiers d'Études Africaines. 14, Cahier 54 (54). EHESS: 339–358. doi:10.3406/cea.1974.2648. JSTOR4391310.
jstor.org
Yearwood 1993, p. 233. Yearwood, Peter J. (1993). ""In a Casual Way with a Blue Pencil": British Policy and the Partition of Kamerun, 1914-1919". Canadian Journal of African Studies. 27 (2). Taylor & Francis, Ltd. on behalf of the Canadian Association of African Studies: 218–244. doi:10.2307/486060. JSTOR486060.
Joseph 1974, p. 343. Joseph, Richard (1974). "The Royal Pretender: Prince Douala Manga Bell in Paris, 1919-1922 (Un prétendant royal: le prince Douala Manga Bell à Paris, 1919-1922)". Cahiers d'Études Africaines. 14, Cahier 54 (54). EHESS: 339–358. doi:10.3406/cea.1974.2648. JSTOR4391310.