APA (7th ed.) Citation

(1940). For whom the bell tolls. Scribner's sons.

Chicago Style (17th ed.) Citation

For Whom the Bell Tolls. Scribner's sons, 1940.

MLA (8th ed.) Citation

For Whom the Bell Tolls. Scribner's sons, 1940.

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