Walliams, David. <br/><br/>
The world's worst children / 
David Walliams ; illustrated by Tony Ross. 
 - London :  HarperCollins,  2016. 
 - 261 p. 
<br/><br/><label>ISBN: </label>978-0008197049 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Behavior--Juvenile fiction.