- Ryff, C.D.; Dienberg-Love, G.; Singer, B.H.
- Positive Health: Connecting Well-Being with Biology.
- Philosophical Transactions of the Royal Society of London, Series B, 2004, Vol. 359, 1383 - 1394
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.