Agresividad injustificada, bullying y violencia escolar 
Rosario Ortega (coord.); autores Erling Roland ...[et.al.]. 
 - Madrid  Alianza Editorial  2010. 
 - 416 p.  23 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>978-84-206-5461-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>School violence<br/>Bullying in schools