1. Beyond Ponce de Leon and Life Satisfaction: New Directions in Quest of Successful Ageing
2. For reviews, see C.D. Ryff, Beyond Ponce de Leon and life satisfaction: New directions in quest of successful aging, International Journal of Behavioral Development, 12, 35-55 (1989);
3. C.D. Ryff and M.J. Essex, Psychological well-being in adulthood and old age: Psychological well-being in adulthood and old age: Descriptive markers and explanatory processes, in Annual Review of Gerontology and Geriatrics, Vol. 11, K.W. Schaie and M.P. Lawton, Eds. (Springer, New York, 1992).
4. N.M. Bradburn, The Structure of Psychological Well-Being (Aldine, Chicago, 1969); E. Diener, Subjective well-being, Psychological Bulletin, 95, 542-575 (1984);
5. M.P. Lawton, The varities of wellbeing, in Emotion in Adult Development, C.Z. Malatesta and C.E. Izard, Eds. (Sage, Bevely Hills, CA, 1984); F. Strack, M. Argyle, and N. Schwarz, Eds., Subjective Well-Being: An Interdisciplinary Perspective (Pergamon, New York, 1991).