Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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