Ann M. Martin. <br/><br/>
Karen's Mistake / 
Ann M. Martin. 
 - USA :  Scholastic Inc,  2000. 
 - 96 ;  20 cm. 
<br/><br/><label>ISBN: </label>0439146038 
<br/><br/><label>Dewey Class. No.: </label>F MAR/O