Gaya APA
PORTNEY,Paul R.. (1982).
CURRENT Issues in Natural Resource Policy .
Washington:
Resources for the future.
Gaya Chicago
PORTNEY,Paul R..
CURRENT Issues in Natural Resource Policy.
Washington:
Resources for the future,
1982.
Teks.
Gaya MLA
PORTNEY,Paul R..
CURRENT Issues in Natural Resource Policy.
Washington:
Resources for the future,
1982.
Teks.
Gaya Turabian
PORTNEY,Paul R..
CURRENT Issues in Natural Resource Policy.
Washington:
Resources for the future,
1982.
Teks.