Solórzano, Helen S.  <br/><br/>
North Star  : focus on listening and speaking : intermediate 
/ Helen S. Solórzano, Jennifer P. L. Schmidt  
 - White Plains :   Longman,   1998. 
 - VIII, 230, [2] s. ;  26 cm.  10AGR-SolH-Nor:I 
<br/><br/><label>ISBN: </label>0201571781