Reason at work :  introductory readings in philosophy / 
Steven M. Cahn, Patricia Kitcher, George Sher (editors) ; under the general editorship of Robert J. Fogelin 
 - 2nd ed. 
 - San Diego :  Harcourt Brace Jovanovich,  1990 
 - 739 p. ;  26 cm. 
<br/><br/><label>ISBN: </label>0155759914