Gaya APA
Diamond, J.
(2011).
COLLAPSE : HOW SOCIETIES CHOOSE TO FAIL OR SURVIVE
(
2)
.
Inggris:
Penguin Books.
Gaya MLA
Diamond, Jared.
"COLLAPSE : HOW SOCIETIES CHOOSE TO FAIL OR SURVIVE".
2
Inggris:
Penguin Books,
2011.
Text.