Παραπομπή APA
Frey, B. S., & Stutzer, A. (2002). Happiness and economics: How the economy and institutions affect well-being. Princeton: Princeton University Press.
Παραπομπή Chicago StyleFrey, Bruno S., and Alois Stutzer. Happiness and Economics: How the Economy and Institutions Affect Well-being. Princeton: Princeton University Press, 2002.
Παραπομπή MLAFrey, Bruno S., and Alois Stutzer. Happiness and Economics: How the Economy and Institutions Affect Well-being. Princeton: Princeton University Press, 2002.
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