- Black, H.I.J., et al., MASQ: Monitoring And Assessing Soil Quality in Great Britain. Countryside Survey Module 6: Soils and Pollution. 2000, Bristol Environment Agency (R & D Technical Report E1-063/TR) ISBN 1857056949.
- Haines-Young, R.H., et al., Accounting for nature: assessing habitats in the UK countryside. 2000, London DETR.
- Parr, T.W., et al., Countryside Survey 1990: summary report, edited by A.P.Stott. 1993, London Department of the Environment.
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