1. Barman, C.R. and Hendrix, J.R.: 1983, ?Exploring Bioethical Issues: An Instructional Model?, American Biology Teacher 45(1, 23?31.
2. Beauchamp, T.L. and Childress, J.F.: 1989, Principles of Biomedical Ethics, 3rd ed., Oxford University Press, New York.
3. BSCS (Biological Science Curriculum Study): 1992, Mapping and Sequencing the Human Genome: Science, Ethics and Public Policy, BSCS, Colorado Springs, CO.
4. Dewey, J.: 1939, ?Theory of Valuation?, International Encyclopedia of Unified Science 11(1, 1?67.
5. Dewey, J.: 1948, Reconstruction in Philosophy, The Beacon Press, Boston.