===Coauthored books===* "Animal Factories" (co-author with James Mason), Crown, New York, 1980* "Test-Tube Babies: a guide to moral questions, present techniques, and future possibilities" (co-edited with William Walters), Oxford University Press, Melbourne, 1982* "The Reproduction Revolution: New Ways of Making Babies" (co-author with Deane Wells), Oxford University Press, Oxford, 1984. revised American edition, "Making Babies", Scribner's New York, 1985* "Animal Liberation: A Graphic Guide" (co-author with Lori Gruen), Camden Press, London, 1987* "Should the Baby Live?
ISBN 0192830384* "Hegel", Oxford University Press, Oxford and New York, 1982; reissued as "Hegel: A Very Short Introduction", Oxford University Press, 2001; also included in full in "German Philosophers: Kant, Hegel, Schopenhauer, Nietzsche", Oxford University Press, Oxford, 1997* "Test-Tube Babies: a guide to moral questions, present techniques, and future possibilities" (co-edited with William Walters), Oxford University Press, Melbourne, 1982* "The Reproduction Revolution: New Ways of Making Babies" (co-author with Deane Wells), Oxford University Press, Oxford, 1984. revised American edition, "Making Babies", Scribner’s New York, 1985* "Should the Baby Live?