ENCYCLOPEDIA OF BIETHICS & REICH, W. T. [. (1995). Encyclopedia of bioethics 5: SAN-ZOO.-- revised edition. Simon and Schuster Macmillan.

ENCYCLOPEDIA OF BIETHICS and Warren Thomas [ed.] REICH. Encyclopedia of Bioethics 5: SAN-ZOO.-- Revised Edition. New York: Simon and Schuster Macmillan, 1995.

ENCYCLOPEDIA OF BIETHICS and Warren Thomas [ed.] REICH. Encyclopedia of Bioethics 5: SAN-ZOO.-- Revised Edition. Simon and Schuster Macmillan, 1995.