APA (7th ed.) Zitazioa
National Bureau of Economic Research, ebrary, Inc, Gruber, J., & Wise, D. A. (2007). Social security programs and retirement around the world: Fiscal implications of reform. University of Chicago Press.
Chicago Style (17th ed.) Zitazioa
National Bureau of Economic Research, Inc ebrary, Jonathan Gruber, eta David A. Wise. Social Security Programs and Retirement Around the World: Fiscal Implications of Reform. Chicago: University of Chicago Press, 2007.
MLA (9th ed.) Zitazioa
National Bureau of Economic Research, et al. Social Security Programs and Retirement Around the World: Fiscal Implications of Reform. University of Chicago Press, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.