Cita APA (7a ed.)

Lewis, C. I., & Langford, C. H. (1959). Symbolic logic (2nd ed.). Dover.

Cita Chicago Style (17a ed.)

Lewis, Clarence Irving, y Cooper Harold Langford. Symbolic Logic. 2nd ed. New York: Dover, 1959.

Cita MLA (9a ed.)

Lewis, Clarence Irving, y Cooper Harold Langford. Symbolic Logic. 2nd ed. Dover, 1959.