1. Principles of Geology;Lyell,1833
2. The Geology of the Country around Lewes;White,1926
3. Report of Field Meeting at Lewes, Sussex;Gaster,1937
4. Studies in the Geomorphology of the South Downs;Bull,1936
5. The Denudation Chronology of the Dip-Slope of the South Downs;Sparks,1949