Gaya APA
Energy, Ecology, Economy. (1972).
New York:
W.W. Norton & Company.
Gaya Chicago
Energy, Ecology, Economy.
.
New York:
W.W. Norton & Company,
1972.
.
Gaya MLA
Energy, Ecology, Economy.
.
New York:
W.W. Norton & Company,
1972.
.
Gaya Turabian
Energy, Ecology, Economy.
New York:
W.W. Norton & Company,
1972.
.