Gaya APA
choi, yeol. (2010).
Why ? Environment (cet.1).
Jakarta:
PT Elex Media Komputindo.
Gaya Chicago
choi, yeol.
Why ? Environment.
cet.1
Jakarta:
PT Elex Media Komputindo,
2010.
Text.
Gaya MLA
choi, yeol.
Why ? Environment.
cet.1
Jakarta:
PT Elex Media Komputindo,
2010.
Text.
Gaya Turabian
choi, yeol.
Why ? Environment.
cet.1
Jakarta:
PT Elex Media Komputindo,
2010.
Print.