Frey, B. S., & Stutzer, A. (2002). Happiness and economics: How the economy and institutions affect well-being. Princeton University Press.
Dyfyniad Arddull ChicagoFrey, Bruno S., and Alois Stutzer. Happiness and Economics: How the Economy and Institutions Affect Well-being. Princeton, N.J.: Princeton University Press, 2002.
Dyfyniad MLAFrey, Bruno S., and Alois Stutzer. Happiness and Economics: How the Economy and Institutions Affect Well-being. Princeton University Press, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.