APA Style
Johns, Chris. (2005).
GEOGRAFI NASIONAL .
New York:
Geografi National Society.
Chicago Style
Johns, Chris.
GEOGRAFI NASIONAL.
New York:
Geografi National Society,
2005.
Text.
MLA Style
Johns, Chris.
GEOGRAFI NASIONAL.
New York:
Geografi National Society,
2005.
Text.
Turabian Style
Johns, Chris.
GEOGRAFI NASIONAL.
New York:
Geografi National Society,
2005.
Print.