- Bengtson, V.L.; Chiriboga, D.A.; Keller, A.B.
- Occupational Differences in Retirement: Patterns of Role Activity and Life Outlook among Chicago Teachers and Steelworkers.
- Havighurst, R.J.;et al.; Eds.: "Adjustment to Retirement: A Cross-National Study", Van Gorcum, 1969, Assen, Netherlands, 53 - 70
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.