Borsch-Supan, A., & Schnabel, R. (1997). Social security and retirement in Germany. National Bureau of Economic Research.
Citazione stile Chigago Style (17a edizione)Borsch-Supan, Axel, e Reinhold Schnabel. Social Security and Retirement in Germany. Cambridge: National Bureau of Economic Research, 1997.
Citatione MLA (9a ed.)Borsch-Supan, Axel, e Reinhold Schnabel. Social Security and Retirement in Germany. National Bureau of Economic Research, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.