APA (7th ed.) Citation

Friend, D. G. (1971). The year book of drug therapy 1971. Year Book Medical Publishers.

Chicago Style (17th ed.) Citation

Friend, Dale G. The Year Book of Drug Therapy 1971. Chicago: Year Book Medical Publishers, 1971.

MLA (8th ed.) Citation

Friend, Dale G. The Year Book of Drug Therapy 1971. Year Book Medical Publishers, 1971.

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