Polya, George <br/><br/>
How to solve it: A new aspect of mathematical method. 
George Polya 
 - New York  Penguin Group  1990 
 - 253 p. 
<br/><br/><label>ISBN: </label>9780140124996 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching
<br/><br/><label>Dewey Class. No.: </label>510.7