Gaya APA

Ecosystems and nature : economics, science and policy / edited by R. Kerry Turner, Kenneth Button, Peter Nijkamp. (1999). : Cheltenham : Edward Elgar.

Gaya MLA

Ecosystems and nature : economics, science and policy / edited by R. Kerry Turner, Kenneth Button, Peter Nijkamp. . : Cheltenham : Edward Elgar, 1999. Text.