APA (7th ed.) Citation

Southwell, R. V. (1946). Relaxation methods in theoretical physics: A continuation of the treatise, Relaxation methods in engineering science. The Clarendon press.

Chicago Style (17th ed.) Citation

Southwell, R. V. Relaxation Methods in Theoretical Physics: A Continuation of the Treatise, Relaxation Methods in Engineering Science. Oxford: The Clarendon press, 1946.

MLA (9th ed.) Citation

Southwell, R. V. Relaxation Methods in Theoretical Physics: A Continuation of the Treatise, Relaxation Methods in Engineering Science. The Clarendon press, 1946.