Dyfyniad APA

FIELD, B. C. (2017). Environmental economics: An introduction 7th ed./ Barry C. Field dan Martha K. Field. Mc GrawHill.

Dyfyniad Arddull Chicago

FIELD, Barry C. Environmental Economics: An Introduction 7th Ed./ Barry C. Field Dan Martha K. Field. Mc GrawHill, 2017.

Dyfyniad MLA

FIELD, Barry C. Environmental Economics: An Introduction 7th Ed./ Barry C. Field Dan Martha K. Field. Mc GrawHill, 2017.

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