- Reker, G.T.; Wong, P.T.
- Personal Optimism, Physical and Mental Health: The Triumph of Successful Aging.
- Birren, J.E.;Livingstone, J.;Eds.: "Cognition Stress and Aging", Prenctice Hall, 1985, Englewood Cliffs, USA, 134 - 173
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.