Cita APA (7th ed.)

Sober, E. (1991). Core questions in philosophy: A text with readings. Macmillan.

Cita Chicago (17th ed.)

Sober, Elliott. Core Questions in Philosophy: A Text with Readings. New York: Macmillan, 1991.

Cita MLA (9th ed.)

Sober, Elliott. Core Questions in Philosophy: A Text with Readings. Macmillan, 1991.