Cita APA (7a ed.)

Callicott, J. B. (2013). Thinking like a planet: The land ethic and the earth ethic. Oxford University Press.

Cita Chicago Style (17a ed.)

Callicott, J. Baird. Thinking like a Planet: The Land Ethic and the Earth Ethic. New York: Oxford University Press, 2013.

Cita MLA (8a ed.)

Callicott, J. Baird. Thinking like a Planet: The Land Ethic and the Earth Ethic. Oxford University Press, 2013.