Parker, I.S.C.; Graham, A.D., 2020. Part II. Auctions and export from Mombasa 1960-1978: Elephant ivory, rhino horn and hippo teeth. Pachyderm 61: 161-175
Watson, R.M.; Graham, A.D.; Parker, I.S.C., 1969. A census of the large mammals of Loliondo Controlled Area, Northern Tanzania. East African Wildlife Journal 7: 43-59, figs. 1-4, tables 1-6, map 1