Richard Layard, Andrew Clark e Claudia Senik (2012).First World Happiness Report Launched at the United Nations, Earth Institute, Columbia University Nova Iorque, 2 de Abril de 2012 [2]
Hagerty, M. R., e Veenhoven, R. (2003). «Wealth and Happiness Revisited – Growing National Income Does Go with Greater Happiness». Social Indicators Research. 64. pp. 1 – 27. doi:10.1023/A:1024790530822
Easterlin, R. A. (2005). «Feeding the Illusion of Growth and Happiness: A Reply to Hagerty and Veenhoven». Social Indicators Research. 74 (3). pp. 429–443. doi:10.1007/s11205-004-6170-z
Easterlin R. A., McVey, L. A., Switek, M., Sawangfa, O., Zweig J. S. (2010). «The happiness-income paradox revisited». Proceedings of the National Academy of Sciences. 107 (52). 22463 páginas. doi:10.1073/pnas.1015962107 !CS1 manut: Nomes múltiplos: lista de autores (link)
"high incomes do correlate with happiness, but long term, increased income doesn’t correlate with increased happiness", How important is money? The Easterlin Paradox, Universidade de Kent, http://www.kent.ac.uk/careers/Choosing/career-satisfaction.htm
Easterlin, Richard (1974). Does Economic Growth Improve the Human Lot? Some Empirical Evidence. In Paul A. David and Melvin W. Reder, eds., Nations and Households in Economic Growth: Essays in Honor of Moses Abramovitz, Nova Iorque: Academic Press, Inc., http://graphics8.nytimes.com/images/2008/04/16/business/Easterlin1974.pdf pdf
Thomas Gilovich, Amit Kumar (2015). Chapter Four - We’ll Always Have Paris: The Hedonic Payoff from Experiential and Material Investments. Advances in Experimental Social PsychologyElsevier Inc., Volume 51, 2015, Pages 147–187. ISSN 0065-2601, doi:10.1016/bs.aesp.2014.10.002 [3]