APA (7th ed.) Citation

Callicott, J. B., Frodeman, R., & Gale Group. (2009). Encyclopedia of environmental ethics and philosophy. Macmillan Reference USA/Gale Cengage Learning.

Chicago Style (17th ed.) Citation

Callicott, J. Baird, Robert Frodeman, and Gale Group. Encyclopedia of Environmental Ethics and Philosophy. Farmington Hills, MI: Macmillan Reference USA/Gale Cengage Learning, 2009.

MLA (8th ed.) Citation

Callicott, J. Baird, et al. Encyclopedia of Environmental Ethics and Philosophy. Macmillan Reference USA/Gale Cengage Learning, 2009.