Gaya APA
Sistem Jaminan Sosial Nasional. (2008).
Bogor:
[s.n.].
Gaya Chicago
Sistem Jaminan Sosial Nasional.
.
Bogor:
[s.n.],
2008.
Text.
Gaya MLA
Sistem Jaminan Sosial Nasional.
.
Bogor:
[s.n.],
2008.
Text.
Gaya Turabian
Sistem Jaminan Sosial Nasional.
Bogor:
[s.n.],
2008.
Print.