The American social security system
Buku Teks
de Jong, Philip
Form and reform of the dutch social security system
Kluwer law and Taxation Publishers, 1990
Buku Teks
The American social.....
Buku Teks
Hermawanto
Asuransi sosial dalam sistem Jaminan Sosial Nasional = social insurance in the national social security system
Fakultas Hukum Universitas Indonesia, 2014
UI - Tesis Membership
Departemen of social security
Australian Goverment Publishing Service, 1993
Buku Teks