Ariola, Mariano M. <br/><br/>
Principles and methods of research / 
Mariano M. Ariola. 
 - Manila :  Rex Book Store,  2006. 
 - xviii, 282 pages ;  22 cm. 
<br/><br/> Bibliography: p.189-190.  Includes index. 
<br/><br/><label>ISBN: </label>9789712345487 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research--Methodology.