1. Aday, L.A. Designing and Conducting Health Surveys: a Comprehensive Guide. San Francisco, California: Jossey-Bass Publishers, 1989.
2. Alonso, J., Anto, J.M. and Moreno, C. Spanish version of the Nottingham Health Profile: translation and preliminary validity. Am. J. Public Health 1990; 80: 704–708.
3. Anderson, J.P., Bush, J.W. and Berry, C.C. Classifying function for health outcome and quality-of-life evaluation. Med. Care 1986; 24: 454–469.
4. Anderson, J.P., Kaplan, R.M. and DeBon, M. Comparison of responses to similar questions in health surveys. In Fowler, F.J. (ed.) Conference Proceedings: Health Survey Research Methods. Rockville, Maryland, Agency for Health Care Research, 1989.
5. Andrews, F.M. and Withey, S.B. Social Indicators of Well-being: Americans' Perceptions of Life Quality. New York, Plenum Press, 1976.