Baron-Cohen, Simon, <br/><br/>
The Essential Difference : 

 -  Penguin UK,  2004. 
 - 218 pages 
<br/><br/><label>ISBN: </label>9780141011011 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology.
<br/><br/><label>Dewey Class. No.: </label>155.33  / BAR