1. Aitkenhead N. Barclay W.J. Brandon A. Chadwick R.A. Chisholm J.L. 2002. British Regional Geology: the Pennines and adjacent areas, 4th edn. British Geological Survey, Keyworth, Nottingham.
2. Birmingham University 1981. Saline Groundwater Investigation Phase 1—Lower Mersey Basin. Final Report to the North West Water Authority and Appendices.
3. Birmingham University 1984. Saline Groundwater Investigation Phase 2—North Merseyside. Final Report to the North West Water Authority and Appendices.
4. Measurements of Head Variations within Observation Boreholes and their Implications for Groundwater Monitoring
5. Brassington F.C. 2006. Field Hydrogeology, 3rd edn. Wiley, Chichester.