Gaya APA
Field, Barry C., Field, Martha K.. (2013).
Environmental Economics An Introduction Sixth Edition .
New York:
McGraw-Hill.
Gaya Chicago
Field, Barry C., Field, Martha K..
Environmental Economics An Introduction Sixth Edition.
New York:
McGraw-Hill,
2013.
Text.
Gaya MLA
Field, Barry C., Field, Martha K..
Environmental Economics An Introduction Sixth Edition.
New York:
McGraw-Hill,
2013.
Text.
Gaya Turabian
Field, Barry C., Field, Martha K..
Environmental Economics An Introduction Sixth Edition.
New York:
McGraw-Hill,
2013.
Print.