Veenhoven, R., & Kegel, S. (2023). IS LIFE REALLY GETTING WORSE? CHANGE OF AVERAGE HAPPINESS IN NATIONS 1946-2021. Zenodo.
Chicago Style (17th ed.) CitationVeenhoven, Ruut, and Silke Kegel. IS LIFE REALLY GETTING WORSE? CHANGE OF AVERAGE HAPPINESS IN NATIONS 1946-2021. Zenodo, 2023.
MLA (9th ed.) CitationVeenhoven, Ruut, and Silke Kegel. IS LIFE REALLY GETTING WORSE? CHANGE OF AVERAGE HAPPINESS IN NATIONS 1946-2021. Zenodo, 2023.
Warning: These citations may not always be 100% accurate.