See H. Sidgwick, Outlines of the History of Ethics (1902); A. C. MacIntyre, A Short History of Ethics (1965); M. Warnock, Ethics since 1900 (1979); W. D. Hudson, A Century of Moral Philosophy (1980); B. Williams, Ethics and the Limits of Philosophy (1985); P. Singer, ed., Applied Ethics (1986).

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