Thinking critically about ethical issues / Vincent Ryan Ruggiero. Ruggiero, Vincent Ryan. Ruggiero, Vincent Ryan. Moral imperative. Ethics. BJ1012 .R82 1991 170 20 RUT Rev. ed. of: The moral imperative. 2nd ed. 1984. Includes bibliographical references (p. 175-178) and index. Mountain View, Calif. : Mayfield, c1992. c1992. 1992 Text xiv, 188 p. ; eng