- King, L.A.
- Interventions for Enhancing Subjective Well-Being Can We Make People Happier, and Should we?.
- Micheal Eid, Randy J. Larsen, ''The Science of Subjective Well-Being'', 2008, The Guilford Press, London, Uk, 431 - 448
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.