Gaya APA
Collapse: how societies choose to fail or succeed. (2005).
New York:
Viking.
Gaya Chicago
Collapse: how societies choose to fail or succeed.
.
New York:
Viking,
2005.
Text.
Gaya MLA
Collapse: how societies choose to fail or succeed.
.
New York:
Viking,
2005.
Text.
Gaya Turabian
Collapse: how societies choose to fail or succeed.
New York:
Viking,
2005.
Print.