Principles and methods of research / 
Ariola, Mariano M. 
 - Manila :  Rex Book Store,  2006. 
 - xviii, 282p.; 21.9cm. 
<br/><br/>includes bibliography, appendices, glossary of research, index 
<br/><br/><label>ISBN: </label>9789712345487 
<br/><br/><label>Dewey Class. No.: </label>Fil 001.4 Ar712 2006