Gaya APA
heo, soon bong. (2002).
WHY? Environment (1).
Jakarta:
PT elex media komputindo.
Gaya Chicago
heo, soon bong.
WHY? Environment.
1
Jakarta:
PT elex media komputindo,
2002.
Text.
Gaya MLA
heo, soon bong.
WHY? Environment.
1
Jakarta:
PT elex media komputindo,
2002.
Text.
Gaya Turabian
heo, soon bong.
WHY? Environment.
1
Jakarta:
PT elex media komputindo,
2002.
Print.