Copi, Irving M. <br/><br/>
Introduction to logic / 
Carl Cohen. 
 - 8th ed. 
 - New york :  Macmillan Publishing,  c1990. 
 - xiv, 569 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0029461928 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.
<br/><br/><label>LC Class. No.: </label>BC108  / .C66 1990