Cita APA (7a ed.)

Baird Callicott, J. (1989). In defense of the land ethic: Essays in environmental philosophy. State University of New York Press.

Cita Chicago Style (17a ed.)

Baird Callicott, J. In Defense of the Land Ethic: Essays in Environmental Philosophy. New York: State University of New York Press, 1989.

Cita MLA (9a ed.)

Baird Callicott, J. In Defense of the Land Ethic: Essays in Environmental Philosophy. State University of New York Press, 1989.