APA (7th ed.) Citation

Singer, P. (1990). Animal liberation (2nd ed.). Avon Books.

Chicago Style (17th ed.) Citation

Singer, Peter. Animal Liberation. 2nd ed. New York, N.Y: Avon Books, 1990.

MLA (9th ed.) Citation

Singer, Peter. Animal Liberation. 2nd ed. Avon Books, 1990.

Warning: These citations may not always be 100% accurate.