Liebman, J. B., Luttmer, E. F. P., & Seif, D. G. (2008). Labor supply responses to marginal social security benefits: Evidence from discontinuities. National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Liebman, Jeffrey B., Erzo F. P. Luttmer, und David G. Seif. Labor Supply Responses to Marginal Social Security Benefits: Evidence from Discontinuities. Cambridge, Mass: National Bureau of Economic Research, 2008.
MLA-Zitierstil (9. Ausg.)Liebman, Jeffrey B., et al. Labor Supply Responses to Marginal Social Security Benefits: Evidence from Discontinuities. National Bureau of Economic Research, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.