Environmental Law Institute & ebrary, Inc. (1999). Protecting Delaware's natural heritage: Tools for biodiversity conservation. Environmental Law Institute.
Style de citation Chicago (17e éd.)Environmental Law Institute et Inc ebrary. Protecting Delaware's Natural Heritage: Tools for Biodiversity Conservation. Washington, D.C.: Environmental Law Institute, 1999.
Style de citation MLA (9e éd.)Environmental Law Institute et Inc ebrary. Protecting Delaware's Natural Heritage: Tools for Biodiversity Conservation. Environmental Law Institute, 1999.
Attention : ces citations peuvent ne pas être correctes à 100%.