1. and Introduction to Statistical Analysis, McGraw-Hill, New York, 1969.
2. Statistical Methods for Rates and Proportions, Wiley, New York, 1972.
3. and Case-Control Studies, Design, Conduct, Analysis, Oxford University Press, New York, 1982, pp. 144–150.
4. Introduction to sample size determination and power analysis for clinical trials
5. Sample size requirements and the cost of a randomized clinical trial with repeated measurements