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