- Lezhnieva, N.; Bekkhus, M.; Fredriksen, P.M.
- Peer Relationships and Quality of Life in 11-12-Year-Old Children: The Health Oriented Pedagogical Project (HOPP)
- Scandinavian Journal of Public Health, 2018, Vol. 46:21, 74 - 81
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.