Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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