1. Dam construction and the degradation of floodplain forest on the Turkwel River, Kenya;Adams;Land Degrad. Dev.,1989
2. Archaeology and Linguistic Reconstructions of History in East Africa;Ambrose,1982
3. Early Khartoum;Arkell,1949
4. L’Évolution des styles céramiques en Ennedi (République du Tchad);Bailloud,1969
5. English-Turkana Dictionary;Barrett,1988