Snyder,C.R., <br/><br/>
Positive psychology  Textual Documents 
C.R. Snyder 
 - 2nd. 
 - London  Sage Publications  2011 
 - 588p.:  24cm. 
<br/><br/><label>ISBN: </label>9788132107507 
<br/><br/><label>Dewey Class. No.: </label>150.1988