- Ruch, W.; Harzer, C.; Proyer, R.T.
- Ways to Happiness in German-Speaking Countries: The Adaptation of the German Vision of the Orientations to Happiness Questionnaire in Paper-Pencil and Internet Samples.
- European Journal of Psychological Assessment, 2010, Vol. 26, 227 - 234
- 1015 5759
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.