Multi-level teaching in the classroom / 
Florida C. Langgas. 
 - page 302 - 303. 
 - January 2014. 
 - Modern Teacher. .
<br/><br/><label>ISSN: </label>20948042 
<br/><br/><label>Source: </label> Volume 62 : Issue No. 08.  Monthly 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching methods.