Penggayaan APA
EHRLICH, Paul R. (1973).
Human ecology: .
San Francisco:
W.H. Freeman and Company.
Chicago Style
EHRLICH, Paul R.
Human ecology: .
San Francisco:
W.H. Freeman and Company,
1973.
Buku.
MLA Style
EHRLICH, Paul R.
Human ecology: .
San Francisco:
W.H. Freeman and Company,
1973.
Buku.
Turabian Style
EHRLICH, Paul R.
Human ecology: .
San Francisco:
W.H. Freeman and Company,
1973.
Buku.