Box, George E. P., Hunter, William G., Hunter, J. Stuart, Statistics for Experimenters Wiley, New York 1978
Fisher, Sir Ronald A., The Design of Experiments, 9th Ed. Hafner Press (Macmillan), New York 1971
Fisher, Sir Ronald A., and Yates, Frank Statistical Tables for Biological, Agricultural andMedical Research, 6th Ed. Hafner Press (Macmillan), New York 1963
Pearson, E. S., ``Student'' as Statistician, Biometrika 30 (1939)210-250
For further thought:
The Latin square design used in the formulation experiment is of a special type: rows cycle to the left as you move down the matrix. Why would this design not be appropriate in an agronomy experiment like the one described in this column? Fisher (see above) discusses this point.