Gaya APA
Ehrlich, Paul R., Ehrlich, Anne H.. (1970).
Population Resources Environment .
Sanfransisco:
WH. FREEMAN AND COMPANY.
Gaya Chicago
Ehrlich, Paul R., Ehrlich, Anne H..
Population Resources Environment.
Sanfransisco:
WH. FREEMAN AND COMPANY,
1970.
.
Gaya MLA
Ehrlich, Paul R., Ehrlich, Anne H..
Population Resources Environment.
Sanfransisco:
WH. FREEMAN AND COMPANY,
1970.
.
Gaya Turabian
Ehrlich, Paul R., Ehrlich, Anne H..
Population Resources Environment.
Sanfransisco:
WH. FREEMAN AND COMPANY,
1970.
.