APA (7th ed.) Citation

Barr, D. P. (1940). Modern medical therapy in general practice. Williams & Wilkins.

Chicago Style (17th ed.) Citation

Barr, David Preswick. Modern Medical Therapy in General Practice. Baltimore: Williams & Wilkins, 1940.

MLA (9th ed.) Citation

Barr, David Preswick. Modern Medical Therapy in General Practice. Williams & Wilkins, 1940.