APA aipamena

Field, B. C. (1997). Environmental Economics: An Introduction. Singapore: McGraw-Hill.

Chicago Style aipamena

Field, Barry C. Environmental Economics: An Introduction. Singapore: McGraw-Hill, 1997.

MLA aipamena

Field, Barry C. Environmental Economics: An Introduction. Singapore: McGraw-Hill, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.