1. Poetics, the Oxford translation of Aristotle,1928
2. Summa theologica;Aquinas,1945
3. Beneficence and nonmaleficence. Lecture, Intensive Bioethics Course, Kennedy Institute for Ethics;Childress,1983
4. The Hippocratic oath: text, translation and interpretation;Edelstein;Bull Hist Med,1943
5. Principles of biomedical ethics;Beauchamp,1983