Dyfyniad APA

Environmental Law Institute & ebrary, Inc. (1999). Protecting Delaware's natural heritage: Tools for biodiversity conservation. Environmental Law Institute.

Dyfyniad Arddull Chicago

Environmental Law Institute and Inc ebrary. Protecting Delaware's Natural Heritage: Tools for Biodiversity Conservation. Washington, D.C.: Environmental Law Institute, 1999.

Dyfyniad MLA

Environmental Law Institute and Inc ebrary. Protecting Delaware's Natural Heritage: Tools for Biodiversity Conservation. Environmental Law Institute, 1999.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.