APA (7th ed.) Citation

NetLibrary, Inc, Walters, K. S., & Portmess, L. (1999). Ethical vegetarianism: From Pythagoras to Peter Singer. State University of New York Press.

Chicago Style (17th ed.) Citation

NetLibrary, Inc, Kerry S. Walters, and Lisa Portmess. Ethical Vegetarianism: From Pythagoras to Peter Singer. Albany: State University of New York Press, 1999.

MLA (9th ed.) Citation

NetLibrary, Inc, et al. Ethical Vegetarianism: From Pythagoras to Peter Singer. State University of New York Press, 1999.