Cita APA (7a ed.)

Butchvarov, P. (1989). Skepticism in ethics. Indiana University Press.

Cita Chicago Style (17a ed.)

Butchvarov, Panayot. Skepticism in Ethics. Bloomington: Indiana University Press, 1989.

Cita MLA (8a ed.)

Butchvarov, Panayot. Skepticism in Ethics. Indiana University Press, 1989.