Gaya APA
Heo, Soon Bong. ().
Why? Environment .
:
PT Elex Media Komputindo.
Gaya Chicago
Heo, Soon Bong.
Why? Environment.
:
PT Elex Media Komputindo,
.
Text.
Gaya MLA
Heo, Soon Bong.
Why? Environment.
:
PT Elex Media Komputindo,
.
Text.
Gaya Turabian
Heo, Soon Bong.
Why? Environment.
:
PT Elex Media Komputindo,
.
Print.