APA aipamena

Hodge,Ian. (1995). Environmental economics. Mac Millan.

Chicago Style aipamena

Hodge,Ian. Environmental Economics. London: Mac Millan, 1995.

MLA aipamena

Hodge,Ian. Environmental Economics. Mac Millan, 1995.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.