Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service) & Bengtsson, T. (2010). Population Ageing - A Threat to the Welfare State?: The Case of Sweden. Springer Berlin Heidelberg : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service) και Tommy Bengtsson. Population Ageing - A Threat to the Welfare State?: The Case of Sweden. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2010.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service) και Tommy Bengtsson. Population Ageing - A Threat to the Welfare State?: The Case of Sweden. Springer Berlin Heidelberg : Imprint: Springer, 2010.