Gaya APA
Is 6. (2001).
Jakarta:
Elex Media Computindo.
Gaya Chicago
Is 6.
2001.
Jakarta:
Elex Media Computindo,
2001.
Text.
Gaya MLA
Is 6.
2001.
Jakarta:
Elex Media Computindo,
2001.
Text.
Gaya Turabian
Is 6.
Jakarta:
Elex Media Computindo,
2001.
Print.