- Markus, H.R.; Curhan, K.B.; Palmersheim, K.A.; Ryff, C.D.
- In Their Own Words: Well-Being at Midlife among High-School Educated and College-Educated Adults.
- Brim, O.G.;Ryff, C.D.;Kessler, R.C.;Eds.: ''How healthy Are We? A National Study of Well-Being at Midlife'', The University of Chicago Press, 2004, Chicago, USA, 273 - 319
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no new data on present happiness.