Achor, Shawn. <br/><br/>
The happiness advantage :  the seven principles of positive psychology that fuel success and performance at work / 
Shawn Achor. 
 - 1st ed. 
 - New York :  Crown Business,  2010. 
 - ix, 236 p. ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780307591548 0307591549 
<br/><br/><label>LCCN: </label>2010006621 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Happiness<br/>Work--Psychological aspects<br/>Positive psychology