Dyfyniad APA

Gorke, M. (2003). The death of our planet's species: A challenge to ecology and ethics. Island Press.

Dyfyniad Arddull Chicago

Gorke, Martin. The Death of Our Planet's Species: A Challenge to Ecology and Ethics. Washington: Island Press, 2003.

Dyfyniad MLA

Gorke, Martin. The Death of Our Planet's Species: A Challenge to Ecology and Ethics. Island Press, 2003.

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