Simbulan, Rolando G. <br/><br/>
Manwal sa Panlipunang Pananaliksik 

 -  IBON Foundation, Inc.  2008 
<br/><br/><label>ISBN: </label>971-0483-44-0 
<br/><br/><label>Dewey Class. No.: </label>Fil 300.078 Si4 2008