Gaya APA
OECD ENVIRONMENTAL OUTLOOK. (2001).
WASHINGTON:
OECD.
Gaya Chicago
OECD ENVIRONMENTAL OUTLOOK.
.
WASHINGTON:
OECD,
2001.
Text.
Gaya MLA
OECD ENVIRONMENTAL OUTLOOK.
.
WASHINGTON:
OECD,
2001.
Text.
Gaya Turabian
OECD ENVIRONMENTAL OUTLOOK.
WASHINGTON:
OECD,
2001.
Print.