Gaya APA
EHRLICH, Paul R.. (1970).
Population rescurces enviranment : issues in human ecology .
San Francisco:
.
Gaya Chicago
EHRLICH, Paul R..
Population rescurces enviranment : issues in human ecology.
San Francisco:
,
1970.
Text.
Gaya MLA
EHRLICH, Paul R..
Population rescurces enviranment : issues in human ecology.
San Francisco:
,
1970.
Text.
Gaya Turabian
EHRLICH, Paul R..
Population rescurces enviranment : issues in human ecology.
San Francisco:
,
1970.
Print.