Csikszentmihalyi, Mihaly, <br/><br/>
Flow: the psychology of optimal experience / 
Mihaly Csikszentmihalyi 
 - New York  Harper Perennial  1990 
 - xii, 303 p,   20 cm. 
<br/><br/> Gratis 
<br/><br/><label>ISBN: </label>9780060920432 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Happiness<br/>Attention
<br/><br/><label>Dewey Class. No.: </label>155.2 CSI