- Morrisson, D.E.; Kristjanson, G.A.
- Personal Adjustment among Older Persons. A Study of Adjustment Problems of Persons 65 and Over in a South Dakota Community.
- South Dakota Experiment Station Technical, 1958, Bulletin 21, South Dakota State College, USA
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.