Gaya APA
Environment:Annual Editions 08/09. (2009).
Bandung:
[s.n.].
Gaya Chicago
Environment:Annual Editions 08/09.
.
Bandung:
[s.n.],
2009.
Text.
Gaya MLA
Environment:Annual Editions 08/09.
.
Bandung:
[s.n.],
2009.
Text.
Gaya Turabian
Environment:Annual Editions 08/09.
Bandung:
[s.n.],
2009.
Print.