International Institute for Applied Systems Analysis. (1998). Social security reform: Proceedings of the International Workshop held in Warsaw on 23-24 September 1997. System Research Institute of Polish Academy of Sciences.
Chicago-Zitierstil (17. Ausg.)International Institute for Applied Systems Analysis. Social Security Reform: Proceedings of the International Workshop Held in Warsaw on 23-24 September 1997. Warsaw: System Research Institute of Polish Academy of Sciences, 1998.
MLA-Zitierstil (9. Ausg.)International Institute for Applied Systems Analysis. Social Security Reform: Proceedings of the International Workshop Held in Warsaw on 23-24 September 1997. System Research Institute of Polish Academy of Sciences, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.