Clark J. D. Cormack J. & Chin S. (2001). Kalambo Falls Prehistoric Site: The earlier cultures: middle and earlier stone age: Cambridge Univ Pr.; Date of 2 Bed 14 to Floor IV which are considered Sangoan.Sheppard P. J. & Kleindienst M. R. (1996). Technological Change in the Earlier and Middle Stone Age of Kalambo Falls (Zambia). The African Archaeological Review 13(3) 171-196.

Sangoan unit
Sangoan
unknown