Johnston, Harry Hamilton. 1885. "The Bantu Languages of Kilima-njaro: Ki-caga, Ki-taveita, Ki-gweno." In The Kilima-Njaro expedition: a record of scientific exploration in eastern equatorial Africa, and a general description of the natural history, languages, and commerce of the Kilima-Njaro District, 478-534. Kegan Paul & Trench.