APA aipamena

FIELD, B. C. (1994). Environmental Economics. McGraw-Hill.

Chicago Style aipamena

FIELD, Barry C. Environmental Economics. McGraw-Hill, 1994.

MLA aipamena

FIELD, Barry C. Environmental Economics. McGraw-Hill, 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.