Veenhoven, R. (1996). Happy life-expectancy: A comprehensive measure of quality-of-life in nations.
Chicago-Zitierstil (17. Ausg.)Veenhoven, Ruut. Happy Life-expectancy: A Comprehensive Measure of Quality-of-life in Nations. Berlin, 1996.
MLA-Zitierstil (8. Ausg.)Veenhoven, Ruut. Happy Life-expectancy: A Comprehensive Measure of Quality-of-life in Nations. 1996.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.