Sinek, Simon. <br/><br/>
Start with why :  how great leaders inspire everyone to take action / 
Simon Sinek. 
 - New York :  Portfolio / Penguin,  2011. 
 - x, 246 p. ;  20 cm. 
<br/><br/>Includes bibliographical references (p. [234]-240) and index. 
<br/><br/><label>ISBN: </label>9780241958223 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Leadership.