APA (7th ed.) Citation

Sigerist, H. E. (1955). A history of medicine A history of medicine.

Chicago Style (17th ed.) Citation

Sigerist, Henry E. "A History of Medicine." A History of Medicine 1955.

MLA (9th ed.) Citation

Sigerist, Henry E. "A History of Medicine." A History of Medicine, 1955.

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