APA (7th ed.) Citation

Callicott, J. B., & Frodeman, R. (2009). Encyclopedia of Environmental Ethics and Philosophy. Macmillan Reference USA / Gale.

Chicago Style (17th ed.) Citation

Callicott, J. Baird, and Robert Frodeman. Encyclopedia of Environmental Ethics and Philosophy. Detroit: Macmillan Reference USA / Gale, 2009.

MLA (9th ed.) Citation

Callicott, J. Baird, and Robert Frodeman. Encyclopedia of Environmental Ethics and Philosophy. Macmillan Reference USA / Gale, 2009.