@book{11868,
	author = {Beauchamp, Tom L. and Childress, James F.},
	title = {Principles of biomedical ethics / Tom L. Beauchamp, James F. Childress.},
	publisher = {Oxford University Press},
	year = {1994},
	address = {New York},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0637/93024390-t.html}
}