APA (7th ed.) Citation

Russell, B. R. (1956). Our knowledge of the external world. New American Library.

Chicago Style (17th ed.) Citation

Russell, Bertrand Russell. Our Knowledge of the External World. New York: New American Library, 1956.

MLA (9th ed.) Citation

Russell, Bertrand Russell. Our Knowledge of the External World. New American Library, 1956.

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