Παραπομπή APA
Field, B. C. (1997). Environmental economics: An introduction (2nd ed.). New York: McGraw-Hill Companies, inc.
Παραπομπή Chicago StyleField, Barry C. Environmental Economics: An Introduction. 2nd ed. New York: McGraw-Hill Companies, inc, 1997.
Παραπομπή MLAField, Barry C. Environmental Economics: An Introduction. 2nd ed. New York: McGraw-Hill Companies, inc, 1997.
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