1. : The Language of Medicine: Its Evolution, Structure, and Dynamics, 2nd ed. New York: Praeger Publishers, 1983, p 28.
2. : The March of Medicine. New York: G. P. Putnam's Sons, 1964, pp 153–166.
3. : A History of Medicine. Springfield, IL: Charles C. Thomas, 1954, p 203.
4. The Medicinal Leech
5. IV. On the action of a secretion obtained from the medicinal leech on the coagulation of the blood