APA (7th ed.) Citation

Helm, D. (1991). Economic policy towards the environment / edited by Dieter Helm. Blackwell.

Chicago Style (17th ed.) Citation

Helm, Dieter. Economic Policy Towards the Environment / Edited by Dieter Helm. Oxford: Blackwell, 1991.

MLA (9th ed.) Citation

Helm, Dieter. Economic Policy Towards the Environment / Edited by Dieter Helm. Blackwell, 1991.

Warning: These citations may not always be 100% accurate.