APA (7th ed.) Citation

Butchvarov, P. (1998). Skepticism about the external world. Oxford University Press.

Chicago Style (17th ed.) Citation

Butchvarov, Panayot. Skepticism About the External World. New York: Oxford University Press, 1998.

MLA (9th ed.) Citation

Butchvarov, Panayot. Skepticism About the External World. Oxford University Press, 1998.