Theories and principles of educational technology / 
Garo, Candelaria D. 
 - Mandaluyong City :  National Book Store,  2008. 
 - xiii, 109 p.; 22.3cm. 
<br/><br/>includes printed references 
<br/><br/><label>ISBN: </label>971086906X 
<br/><br/><label>Dewey Class. No.: </label>Fil 371.33 G237 2008