International Social Security Association. (1994). Migration, a worldwide challenge for social security. Studies and research.
Chicago-Zitierstil (17. Ausg.)International Social Security Association. "Migration, a Worldwide Challenge for Social Security." Studies and Research 1994.
MLA-Zitierstil (9. Ausg.)International Social Security Association. "Migration, a Worldwide Challenge for Social Security." Studies and Research, 1994.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.