1. Alexander, M. 1961 Introduction to Soil Microbiology, John Wiley and Sons, New York, 472 p.
2. Alexander, M. 1965 Nitrification.In Soil Nitrogen. pp 309–343. Eds. M. V. Bartholomew and F. E. Clark. Am. Soc. Agron., Wisconsin.
3. Alexander, M. and Clark, F. E. 1965 Nitrifying bacteria.In Methods of Soil Analysis, Part 2, pp 1477–1483. Eds. C. A. Blacket al. Am. Soc. Agron., Wisconsin.
4. Allison, L. E. 1965 Organic carbon.In Methods of Soil Analysis, Part 2, pp 1367–1378. Eds. C. A. Blacket al. Am. Soc. Agron. Wisconsin.
5. Allison, F. E. 1955 The enigma of soil nitrogen balance sheets. Adv. Agron.7, 213–250.