Gaya APA
Heo, Seon-bong. (2010).
Why? Evironment .
Jakarta:
Elex media Komptindo.
Gaya Chicago
Heo, Seon-bong.
Why? Evironment.
Jakarta:
Elex media Komptindo,
2010.
Text.
Gaya MLA
Heo, Seon-bong.
Why? Evironment.
Jakarta:
Elex media Komptindo,
2010.
Text.
Gaya Turabian
Heo, Seon-bong.
Why? Evironment.
Jakarta:
Elex media Komptindo,
2010.
Print.