- Veenhoven, R.
- The four Qualities of Life. Ordering Concepts and Measures of the good Life.
- Della Fave, A.: Ed.: " The Exploration of Happiness: Present and future Pespectives," Springer, Netherland, 2013, 195 - 226
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.