1. The energetics of British agriculture
2. Country Land Owners Association Farm Buildings Award (1997). Commendation. Little Ash Eco-Farm House.
3. Dahlberg, K.A. (1979)Beyond the Green Revolution: The Ecology and Politics of Global Agricultural Development.Plenum, New York.
4. Dartmoor National Park Authority (1995).Dartmoor National Park Report.Dartmoor National Park Authority, Parke, Bovey Tracey, Devon, United Kingdom.
5. Erlich, P.R., Erlich, A.H., Holden, J.P. (1977)Ecoscience: Population, Resources, Environment.W.H. Freeman, New York.