Cita APA (7th ed.)

Sontag, F. (1984). The elements of philosophy. Scribner.

Cita Chicago (17th ed.)

Sontag, Frederick. The Elements of Philosophy. New York: Scribner, 1984.

Cita MLA (8th ed.)

Sontag, Frederick. The Elements of Philosophy. Scribner, 1984.