1. American Bar Association: 1980,Model Code of Professional Responsibility.
2. American Medical Association: 1980,Principles of Medical Ethics.
3. Bayles, M. D.: 1981,Professional Ethics (Wadsworth, Belmont).
4. Behrman, J. N.: 1988,Essays on Ethics in Business and the Professions (Prentice-Hall, Englewood Cliffs).
5. Cogan, M. L.: 1953, ?Toward a Definition of a Profession?,Harvard Educational Review XXIII, pp. 33?50.