1. Ashton, N., D. Q. Bowen, J. A. Holman, C. O. Hunt, B. G. Irving, R. A. Kemp, S. G. Lewis, J. McNabb, S. Parfitt, and M. B. Seddon. (1994). Excavations at the Lower Palaeolithic site at East Farm, Barnham, Suffolk 1989-92. Journal of the Geological Society, London 151: 599–605.
2. Ashton, N., J. Cook, and Rose, J. (eds.). (1992). High Lodge: excavations by G. de G. Sieveking 1962-1968 and J. Cook 1988, British Museum Press, London.
3. Ashton, N., S. Lewis, and Parfitt, S. (eds.). (1998). Excavations at the Lower Palaeolithic Site at East Farm, Barnham, Suffolk 1989-94, British Museum Occasional Paper 125, The British Museum, London.
4. Ashton, N. and McNabb, J. (1994). Bifaces in perspective. In N. Ashton and A. David (ed.) Stories in stone. Lithics Studies Society Occasional Paper, The Lithics Studies Society, Oxford, pp. 182–191.
5. Baden-Powell, D.F.W. (1949). Experimental Clactonian Technique. Proceedings of the Prehistoric Society 15: 38–41.