Dyfyniad APA

Field, B. C., & Field, M. K. (2021). Environmental economics: An introduction (Eight edition.). McGraw-Hill.

Dyfyniad Arddull Chicago

Field, Barry C., and Martha K. Field. Environmental Economics: An Introduction. Eight edition. New York, NY: McGraw-Hill, 2021.

Dyfyniad MLA

Field, Barry C., and Martha K. Field. Environmental Economics: An Introduction. Eight edition. McGraw-Hill, 2021.

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