Gupta, S P <br/><br/>
Uchatar shiksha manovigyan (Hindi) 

 - 3rd 
 - Allahabad  Sharda Pustak Bhawan  2007 
 - 547 
<br/><br/><label>ISBN: </label>81-86204-33-4 
<br/><br/><label>Dewey Class. No.: </label>370.15 GS: