APA (7th ed.) Citation

Butler, G. F., Fantus, B., Bethea, O. W., & Beckman, H. (1949). The Year book of drug therapy. Year Book Medical Pub.

Chicago Style (17th ed.) Citation

Butler, George Frank, Bernard Fantus, Oscar Walter Bethea, and Harry Beckman. The Year Book of Drug Therapy. Chicago: Year Book Medical Pub, 1949.

MLA (9th ed.) Citation

Butler, George Frank, et al. The Year Book of Drug Therapy. Year Book Medical Pub, 1949.