Gaya APA
Internet connection. (2002).
:
PT. Centrin Online TBK.
Gaya Chicago
Internet connection.
.
:
PT. Centrin Online TBK,
2002.
Text.
Gaya MLA
Internet connection.
.
:
PT. Centrin Online TBK,
2002.
Text.
Gaya Turabian
Internet connection.
:
PT. Centrin Online TBK,
2002.
Print.