Wilke, C. (2018). German Pension Reform: On Road Towards a Sustainable Multi-Pillar System. Peter Lang International Academic Publishing Group.
Chicago-čujuhus (17. p.)Wilke, Christina. German Pension Reform: On Road Towards a Sustainable Multi-Pillar System. Bern: Peter Lang International Academic Publishing Group, 2018.
MLA-čujuhus (9. p.)Wilke, Christina. German Pension Reform: On Road Towards a Sustainable Multi-Pillar System. Peter Lang International Academic Publishing Group, 2018.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.