1. American Medical Association (AMA). 2009. ‘Euthanasia.’ Code of medical ethics, Opinion 2.21. Chicago.
2. Amundsen, Darrell. 1989. Suicide and early Christian values. In Suicide and euthanasia: Historical and contemporary themes, ed. Baruch Brody, 77–153. Boston: Kluwer.
3. Beauchamp, Tom. 1989. Suicide in the age of reason. In Suicide and euthanasia: Historical and contemporary themes, ed. Baruch Brody, 183–219. Boston: Kluwer.
4. Bierce, Ambrose. 1998. The morality of suicide, San Francisco Examiner, 5 July 1891. In Ambrose Bierce: A sole survivor: Bits of autobiography, 225–226. ed. S. Joshi and David Schultz, Knoxville: University of Tennessee Press.
5. Biggar, Nigel. 2004. Aiming to kill: The ethics of suicide and euthanasia. London: Darton, Longman and Todd.