Verson Vadillo, Lidia <br/><br/>
Introducción a la lengua 
Lidia Verson Vadillo, José Castro de León. 
 - 2da ed. 
 - San Juan, Puerto Rico  Editorial Plaza Mayor  2005. 
 - 282 p.  ill.  27 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>1563282771 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Spanish language--Study and teaching.<br/>Spanish language--Grammar--Study and teaching.