Gaya APA
GLOBAL ENVIRONMENTAL ISSUES. (1990).
LONDON:
DAVID D. KEMP.
Gaya Chicago
GLOBAL ENVIRONMENTAL ISSUES.
.
LONDON:
DAVID D. KEMP,
1990.
Text.
Gaya MLA
GLOBAL ENVIRONMENTAL ISSUES.
.
LONDON:
DAVID D. KEMP,
1990.
Text.
Gaya Turabian
GLOBAL ENVIRONMENTAL ISSUES.
LONDON:
DAVID D. KEMP,
1990.
Print.