Ruggiero, Vincent Ryan.  <br/><br/>
The art of thinking :  a guide to critical and creative thought / 
Vincent Ryan Ruggiero.  
 - 8th ed. 
 - xviii, 281 pages :  illustrations ;  23 cm  
<br/><br/>Includes bibliographical references (pages 264-270) and index.  
<br/><br/><label>ISBN: </label>9780321411280 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Creative thinking<br/>Critical thinking<br/>Thought and thinking - Problems, exercises, etc