Gaya APA
GLOBAL ENVIRONMENT OUTLOOK. (1999).
LONDON:
EARTHSCAN.
Gaya Chicago
GLOBAL ENVIRONMENT OUTLOOK.
.
LONDON:
EARTHSCAN,
1999.
Text.
Gaya MLA
GLOBAL ENVIRONMENT OUTLOOK.
.
LONDON:
EARTHSCAN,
1999.
Text.
Gaya Turabian
GLOBAL ENVIRONMENT OUTLOOK.
LONDON:
EARTHSCAN,
1999.
Print.