APA (7th ed.) Zitazioa

(1999). Ecosystems and nature: Economics, science and policy. Edward Elgar.

Chicago Style (17th ed.) Zitazioa

Ecosystems and Nature: Economics, Science and Policy. Cheltenham: Edward Elgar, 1999.

MLA (9th ed.) Zitazioa

Ecosystems and Nature: Economics, Science and Policy. Edward Elgar, 1999.