1. Allen, P. M.: Summary description of the geology of western Sierra Leone. - 10th Ann. Rept. Res. Inst. African Geol., Univ. Leeds, 23–24, 1966.
2. —: The stratigraphy of a geosynclinal succession in Western Sierra Leone, West Africa. - Geol. Mag.,105, 62–73, 1968.
3. Andrews-Jones, D. A.: Ann. Rept. Geol. Surv. Sierra Leone 1959/60 para. 48, 1961.
4. -: The geology and mineral resources of the northern Kambui Schist belt and the adjacent granulites. - Geol. Surv. of Sierra Leone, Bull. 6, in press.
5. Baker, C. O.: Ann. Rept. Geol. Surv. Sierra Leone, 1959/60, para 55, 1961.