APA (7th ed.) Citation

Lewis, C. I., & Langford, C. H. (1932). Symbolic logic. The Century Co.

Chicago Style (17th ed.) Citation

Lewis, Clarence Irving, and Cooper Harold Langford. Symbolic Logic. New York [u.a.]: The Century Co, 1932.

MLA (9th ed.) Citation

Lewis, Clarence Irving, and Cooper Harold Langford. Symbolic Logic. The Century Co, 1932.