Pilkey, Dav <br/><br/>
Captain Underpants and the Preposterous Plight of the Purple Potty People :  The Eighth Epic Novel. 

 - New York, NY :  Scholastic,  2006. 
 - 173 
<br/><br/>
<br/><br/><label>ISBN: </label>978-0-439-37614-3