Velleman, Daniel J. <br/><br/>
How to prove it  a structured approach 
Daniel J. Velleman. 
 - Cambridge [England]  New York  Cambridge University  1994. 
 - 304 p. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0521441161 
<br/><br/><label>LCCN: </label>93014567  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical<br/>Mathematics
<br/><br/><label>LC Class. No.: </label>QA9  / .V38 1994 
<br/><br/><label>Dewey Class. No.: </label>511.3