Walton, Douglas N. <br/><br/>
Informal logic  a handbook for critical argumentation 
Douglas N. Walton. 
 - Cambridge  New York  Cambridge University Press  1989. 
 - xiii, 292 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0521370329 0521379253 (pbk.) 
<br/><br/><label>LCCN: </label>88030762  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic<br/>Reasoning
<br/><br/><label>Dewey Class. No.: </label>168