Gorke, M. (2003). The death of our planet's species: A challenge to ecology and ethics. Island Press.
Lua i Stíl Chicago (17ú heag.)Gorke, Martin. The Death of Our Planet's Species: A Challenge to Ecology and Ethics. Washington: Island Press, 2003.
Lua MLA (9ú heag.)Gorke, Martin. The Death of Our Planet's Species: A Challenge to Ecology and Ethics. Island Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.