Costa, D. L. (1999). American living standards: Evidence from recreational expenditures. National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Costa, Dora L. American Living Standards: Evidence from Recreational Expenditures. Cambridge: National Bureau of Economic Research, 1999.
MLA-Zitierstil (9. Ausg.)Costa, Dora L. American Living Standards: Evidence from Recreational Expenditures. National Bureau of Economic Research, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.