1. Andrews, J. F., Briggs, R. and Jenkins, S. H. (eds). 1974. Instrumentation Control and Automation for Wastewater Treatment Systems, Progress in Water Technology, 6, Pergamon Press, Oxford, England.
2. Simple fibre optic pH sensor for use in liquid titrations
3. Briggs, R. 1981. 'Water quality monitoring and control', in Developments in Environmental Control and Public Health Porteous, A. (ed) 2, 155, Applied Science Publishers, Barking, Essex.