Roosevelt, T. 1910. African game trails: an account of the African wanderings of an American hunter-naturalist, part 12: The great rhinoceros of the Lado. Scribner's Magazine 48 (3): 261-290, figs. 1-35, map 1.
African game trails: an account of the African wanderings of an American hunter-naturalist, part 12: The great rhinoceros of the Lado