Salvador, Nelie S. <br/><br/>
Interaksyong pangklasrum sa antas tersyarya 
Nelie S. Salvador 
 -  2008 
 - xviii, 370 leaves   28 cm. 
<br/><br/> Thesis (Ph.D.-Linguistics) -- Mariano Marcos State University, Laoag City 
<br/><br/>Bibliography: leaves 326-331