1. Cardinal. The challenge of religious pluralism;Deardon;Origins,1976
2. The physician's responsibility toward hopelessly ill patients;Wanzer;NEJM,1989
3. On Euthanasia. Vatican Congregation for the Doctrine of the Faith,1980
4. Health care ethics;Ashley,1989
5. Questions of ethics regarding the fatally ill and the dying;O'Rourke,1989