Veenhoven, R. (1996). Happy life-expectancy: A comprehensive measure of quality-of-life in nations.
Čikaški stil citiranja (17. izdanje)Veenhoven, Ruut. Happy Life-expectancy: A Comprehensive Measure of Quality-of-life in Nations. Berlin, 1996.
MLA način citiranja (8. izdanje)Veenhoven, Ruut. Happy Life-expectancy: A Comprehensive Measure of Quality-of-life in Nations. 1996.
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