Clark, D. W., & Williams, T. F. (1976). Teaching of chronic illness and aging: A conference sponsored by the John E. Fogarty International Center for Advanced Study in the Health Sciences, and the Association of Teachers of Preventive Medicine, National Institutes of Health, Bethesda, M. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health.

Clark, Duncan W., and Thomas Franklin Williams. Teaching of Chronic Illness and Aging: A Conference Sponsored by the John E. Fogarty International Center for Advanced Study in the Health Sciences, and the Association of Teachers of Preventive Medicine, National Institutes of Health, Bethesda, M. Bethesda, MD: Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health, 1976.

Clark, Duncan W., and Thomas Franklin Williams. Teaching of Chronic Illness and Aging: A Conference Sponsored by the John E. Fogarty International Center for Advanced Study in the Health Sciences, and the Association of Teachers of Preventive Medicine, National Institutes of Health, Bethesda, M. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health, 1976.