Polya, G. <br/><br/>
How to solve it : a new aspect of mathematical method / 
G. Polya 
 - 2nd ed. 
 -  Penguin Books  1985 
<br/><br/>14833 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Problem solving
<br/><br/><label>LC Class. No.: </label>QA63  / Pol