Gaya APA
Ehrlich, Paul R.. (1972).
Population resources environment : issues in human ecology/Paul R. Ehrlich; Anne H. Ehrlich .
San Francisco:
W.H. Freeman and Company.
Gaya Chicago
Ehrlich, Paul R..
Population resources environment : issues in human ecology/Paul R. Ehrlich; Anne H. Ehrlich.
San Francisco:
W.H. Freeman and Company,
1972.
.
Gaya MLA
Ehrlich, Paul R..
Population resources environment : issues in human ecology/Paul R. Ehrlich; Anne H. Ehrlich.
San Francisco:
W.H. Freeman and Company,
1972.
.
Gaya Turabian
Ehrlich, Paul R..
Population resources environment : issues in human ecology/Paul R. Ehrlich; Anne H. Ehrlich.
San Francisco:
W.H. Freeman and Company,
1972.
.