1. (1995) Survival Analysis Using the SAS System: A Practical Guide. Cary, NC: SAS Institute, Inc.
2. , and , (1994) Selection bias associated with contraceptive practice in time-to-pregnancy studies. In and , (eds.): Human Reproductive Ecology: Interactions of Environment, Fertility and Behavior. Annals of the New York Academy of Sciences 709: 156–164.
3. The Polygyny–Fertility Hypothesis: A Re-evaluation
4. An estimate of the natural fecundability ratio curve
5. Does Malnutrition Affect Fecundity? A Summary of Evidence