APA aipamena

Hanley, N. (1997). Environmental economics in theory and practice. Macmillan.

Chicago Style aipamena

Hanley, Nick. Environmental Economics in Theory and Practice. London: Macmillan, 1997.

MLA aipamena

Hanley, Nick. Environmental Economics in Theory and Practice. Macmillan, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.