1. Life and death with liberty and justice. A contribution to the euthanasia debate;Grisez,1979
2. What are they saying about euthanasia?;Gula,1986
3. Ethics at the edges of life;Ramsey,1978
4. Death, dying and euthanasia;Horan,1977
5. Principles of biomedical ethics;Beauchamp,1989