Ўзбекистон Миллий Энциклопедияси 12-том 

 - Tashkent  Davlat ilmiy nashriyoti  2005 
<br/><br/> Age Group: Adult 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Encyclopedia
<br/><br/><label>Dewey Class. No.: </label>039.022