1. (1990). Categorical Data Analysis. Wiley, New York.
2. Exact inference for categorical data: recent advances and continuing controversies
3. and (1980). Statistical Methods in Cancer Research , Vol. I – the Analysis of Case-Control Studies. International Agency for Research on Cancer, Lyon.
4. and (1990). Statistical Inference. Duxburt Press, Belmont, California.
5. (1977). Sampling Techniques , 3rd edn. Wiley, New York.