APA (7th ed.) Citation

Lewis, C. I., & Langford, C. H. (1959). Symbolic logic (2η έκδ.). Dover.

Chicago Style (17th ed.) Citation

Lewis, Clarence Irving, and Cooper Harold Langford. Symbolic Logic. 2η έκδ. New York: Dover, 1959.

MLA (8th ed.) Citation

Lewis, Clarence Irving, and Cooper Harold Langford. Symbolic Logic. 2η έκδ. Dover, 1959.

Warning: These citations may not always be 100% accurate.