Effective study and thinking skills /  
Venus Mendoza Belen et al.  
 - Bulacan :  Trinitas Publishing,   c2003. 
 - 189 p.  
<br/><br/>
<br/><br/><label>ISBN: </label>971-42-0399-6 
<br/><br/><label>Dewey Class. No.: </label>Fil 372.302 Ef36 2004