Nielsen, Jennifer A. <br/><br/>
Infinity ring :  book six : Behind enemy lines / 
Jennifer A. Nielsen. 
 - New York, NY :  Scholastic,  2013. 
 - 186p. 
<br/><br/><label>ISBN: </label>978-0-545-38701-9 
<br/><br/><label>Dewey Class. No.: </label>SC N669 2013