Willard, Charles Arthur <br/><br/>
A theory of argumentation/ 
Charles Arthur Willard 
 - Tuscaloosa, Alabama:   The University of Alabama Press,   1989. 
 - x, 324p. 
<br/><br/>Includes index and bibliographical references 
<br/><br/><label>ISBN: </label>0817304274 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reasoning
<br/><br/><label>LC Class. No.: </label>BC 177 WIL 1989