Vellem, Daniel J. <br/><br/>
How To Prove It A Structured Approach / 
Daniel J. Velleman.  
 - New York :   Cambridge University ,   2006. 
 - xiii, 384 p. : 
<br/><br/> Includes index  
<br/><br/><label>ISBN: </label>9780521675994 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic Symbolic and mathematical 
<br/><br/><label>LC Class. No.: </label>QA 9 .V38 2006