APA (7th ed.) Citation

Hargrove, E. C. (1996). Foundations of environmental ethics. Environmental Ethics Books.

Chicago Style (17th ed.) Citation

Hargrove, Eugene C. Foundations of Environmental Ethics. Denton, TX: Environmental Ethics Books, 1996.

MLA (9th ed.) Citation

Hargrove, Eugene C. Foundations of Environmental Ethics. Environmental Ethics Books, 1996.