Gaya APA
Green Living Guide. (2009).
:
National Geographic Indonesia.
Gaya Chicago
Green Living Guide.
.
:
National Geographic Indonesia,
2009.
Terbitan Berseri.
Gaya MLA
Green Living Guide.
.
:
National Geographic Indonesia,
2009.
Terbitan Berseri.
Gaya Turabian
Green Living Guide.
:
National Geographic Indonesia,
2009.
Terbitan Berseri.