1. Malpractice Claims During 1988–1992: A National Survey of Dentists;Milgrom;JADA,1994
2. Union Pacific Railway v. Botsford, 141 U.S. 250, 251(1891).
3. Prosser and Keeton on the Law of Torts;Keeton,1984
4. Prosser and Keeton on the Law of Torts;Keeton,1984
5. Morris on Torts;Morris,1980