1. (1984). Survey Methods in Community Medicine. An Introduction to Epidemiological and Evaluative Studies, New York: Churchill Livingstone, 148–153.
2. , , , (1961). A study of the psychological processes of the pregnancy and earliest mother-child relationship. The Psychological Study of the Child, London: The Hogarth Press, Vol. 16, 9–72.
3. (1975). Birth of a First Child, London: Tavistock.
4. Factors in a Woman??s Decision to Undergo Genetic Amniocentesis for Advanced Maternal Age