Gaya APA
Field, Barry C., Martha K. Field. (2009).
Enviromental Economics An Introduction 5th Edition (5th ed.).
New York:
McGraw-Hill.
Gaya Chicago
Field, Barry C., Martha K. Field.
Enviromental Economics An Introduction 5th Edition.
5th ed.
New York:
McGraw-Hill,
2009.
Text.
Gaya MLA
Field, Barry C., Martha K. Field.
Enviromental Economics An Introduction 5th Edition.
5th ed.
New York:
McGraw-Hill,
2009.
Text.
Gaya Turabian
Field, Barry C., Martha K. Field.
Enviromental Economics An Introduction 5th Edition.
5th ed.
New York:
McGraw-Hill,
2009.
Print.