Ethel De Leon-Abao. <br/><br/>
Language learning materials development / 
Ethel De Leon-Abao, Rivika C. Alda, Remedios C. Bacus. 
 - Quezon City :  Lorimar Publishing Inc,  c2021. 
 - xii, 104 pages ;  26 cm. 
<br/><br/> Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9786214510092 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages--Study and teaching.<br/>Teaching--Aids and devices.