420 <br/>
          Wider world 1  : Student's book 6th grade 
  
 - 2 ed 
.- Ulaanbaatar :, 2023., 
.- 141 pages ;,  30 sm. 
-ISBN 97883678358030 
<br/> - Special Edition for Mongolia 
<br/><br/><label>Тавиурын заалт: </label>420