1. 1974. A Course in Probability Theory, 2nd ed, Academic Press.
2. 1971. Mathematical Statistics, Prentice-Hall, Englewood Cliffs, NJ, 463 pp.
3. and 1985. ‘Experimental approaches for quantifying the effect of soil erosion on productivity’, Chap. 13, in and (Eds.), Soil Erosion and Crop Productivity, ASA-CSSA-SSSA, Madison, WI, pp. 213–234.
4. Soil Conservation Society of America 1976. Resource Conservation Glossary, 2nd edn. Soil Conserv. Soc. Am., Ankeny, IA.
5. Soil Science Society of America 1978. Glossary of Soil Science Terms, Soil Sci. Soc. Am., Madison, WI.