1. American Public Health Association, American Water Works Association, Water Pollution Control Federation 1975. Standard Methods for the examination of Water and Wastewater, 14th Edition.
2. 1982. ‘Nitrogen balance in intensively managed pasture systems’, in (Ed.), Nitrogen Balances in New Zealand Ecosystems—Proceedings of a Workshop, DSIR, Palmerston North, New Zealand, 47–66.
3. and 1977. Regression Analysis by Example, John Wiley and Sons, New York, 288 pp.
4. 1976. ‘A review of the effects of agriculture on the chemical composition and quality of surface and underground waters’, in Agriculture and Water Quality. MAFF Technical Bulletin, 32, 5–57.